diff --git a/classes/Config.php b/classes/Config.php
index 7d33665..208e85b 100644
--- a/classes/Config.php
+++ b/classes/Config.php
@@ -1,74 +1,90 @@
 <?php
 /**
- * Config class
+ * Config class.
  */
 namespace Alltube;
 
 use Symfony\Component\Yaml\Yaml;
 
 /**
- * Manage config parameters
+ * Manage config parameters.
  */
 class Config
 {
     /**
-     * Singleton instance
+     * Singleton instance.
+     *
      * @var Config
      */
     private static $instance;
 
     /**
-     * youtube-dl binary path
+     * youtube-dl binary path.
+     *
      * @var string
      */
     public $youtubedl = 'vendor/rg3/youtube-dl/youtube_dl/__main__.py';
 
     /**
-     * python binary path
+     * python binary path.
+     *
      * @var string
      */
     public $python = '/usr/bin/python';
 
     /**
-     * youtube-dl parameters
+     * youtube-dl parameters.
+     *
      * @var array
      */
-    public $params = array('--no-playlist', '--no-warnings', '-f best[protocol^=http]', '--playlist-end', 1);
+    public $params = ['--no-playlist', '--no-warnings', '-f best[protocol^=http]', '--playlist-end', 1];
 
     /**
-     * Enable audio conversion
+     * Enable audio conversion.
+     *
      * @var bool
      */
     public $convert = false;
 
     /**
-     * avconv or ffmpeg binary path
+     * avconv or ffmpeg binary path.
+     *
      * @var string
      */
     public $avconv = 'vendor/bin/ffmpeg';
 
     /**
-     * rtmpdump binary path
+     * rtmpdump binary path.
+     *
      * @var string
      */
     public $rtmpdump = 'vendor/bin/rtmpdump';
 
     /**
-     * curl binary path
+     * curl binary path.
+     *
      * @var string
      */
     public $curl = '/usr/bin/curl';
 
     /**
-     * curl parameters
+     * curl parameters.
+     *
      * @var array
      */
-    public $curl_params = array();
-
-    private $configFile;
+    public $curl_params = [];
 
     /**
-     * Config constructor
+     * YAML config file path.
+     *
+     * @var string
+     */
+    private $file;
+
+    /**
+     * Config constructor.
+     *
+     * @param string $yamlfile YAML config file path
      */
     private function __construct($yamlfile)
     {
@@ -89,7 +105,9 @@ class Config
     }
 
     /**
-     * Get singleton instance
+     * Get singleton instance.
+     *
+     * @param string $yamlfile YAML config file name
      *
      * @return Config
      */
@@ -97,13 +115,15 @@ class Config
     {
         $yamlfile = __DIR__.'/../'.$yamlfile;
         if (is_null(self::$instance) || self::$instance->file != $yamlfile) {
-            self::$instance = new Config($yamlfile);
+            self::$instance = new self($yamlfile);
         }
+
         return self::$instance;
     }
 
     /**
-     * Destroy singleton instance
+     * Destroy singleton instance.
+     *
      * @return void
      */
     public static function destroyInstance()
diff --git a/classes/VideoDownload.php b/classes/VideoDownload.php
index 5023a20..e497113 100644
--- a/classes/VideoDownload.php
+++ b/classes/VideoDownload.php
@@ -1,21 +1,19 @@
 <?php
 /**
- * VideoDownload class
+ * VideoDownload class.
  */
 namespace Alltube;
 
-use Symfony\Component\Process\Process;
-use Symfony\Component\Process\ProcessBuilder;
 use Chain\Chain;
+use Symfony\Component\Process\ProcessBuilder;
 
 /**
- * Extract info about videos
+ * Extract info about videos.
  */
 class VideoDownload
 {
-
     /**
-     * VideoDownload constructor
+     * VideoDownload constructor.
      */
     public function __construct()
     {
@@ -23,31 +21,32 @@ class VideoDownload
         $this->procBuilder = new ProcessBuilder();
         $this->procBuilder->setPrefix(
             array_merge(
-                array($this->config->python, $this->config->youtubedl),
+                [$this->config->python, $this->config->youtubedl],
                 $this->config->params
             )
         );
     }
 
     /**
-     * List all extractors
+     * List all extractors.
      *
      * @return string[] Extractors
      * */
     public function listExtractors()
     {
         $this->procBuilder->setArguments(
-            array(
-                '--list-extractors'
-            )
+            [
+                '--list-extractors',
+            ]
         );
         $process = $this->procBuilder->getProcess();
         $process->run();
+
         return explode(PHP_EOL, trim($process->getOutput()));
     }
 
     /**
-     * Get all information about a video
+     * Get all information about a video.
      *
      * @param string $url    URL of page
      * @param string $format Format to use for the video
@@ -57,10 +56,10 @@ class VideoDownload
     public function getJSON($url, $format = null)
     {
         $this->procBuilder->setArguments(
-            array(
+            [
                 '--dump-json',
-                $url
-            )
+                $url,
+            ]
         );
         if (isset($format)) {
             $this->procBuilder->add('-f '.$format);
@@ -75,7 +74,7 @@ class VideoDownload
     }
 
     /**
-     * Get URL of video from URL of page
+     * Get URL of video from URL of page.
      *
      * @param string $url    URL of page
      * @param string $format Format to use for the video
@@ -85,10 +84,10 @@ class VideoDownload
     public function getURL($url, $format = null)
     {
         $this->procBuilder->setArguments(
-            array(
+            [
                 '--get-url',
-                $url
-            )
+                $url,
+            ]
         );
         if (isset($format)) {
             $this->procBuilder->add('-f '.$format);
@@ -103,7 +102,7 @@ class VideoDownload
     }
 
     /**
-     * Get filename of video file from URL of page
+     * Get filename of video file from URL of page.
      *
      * @param string $url    URL of page
      * @param string $format Format to use for the video
@@ -113,10 +112,10 @@ class VideoDownload
     public function getFilename($url, $format = null)
     {
         $this->procBuilder->setArguments(
-            array(
+            [
                 '--get-filename',
-                $url
-            )
+                $url,
+            ]
         );
         if (isset($format)) {
             $this->procBuilder->add('-f '.$format);
@@ -131,7 +130,7 @@ class VideoDownload
     }
 
     /**
-     * Get filename of audio from URL of page
+     * Get filename of audio from URL of page.
      *
      * @param string $url    URL of page
      * @param string $format Format to use for the video
@@ -151,7 +150,7 @@ class VideoDownload
     }
 
     /**
-     * Get audio stream of converted video
+     * Get audio stream of converted video.
      *
      * @param string $url    URL of page
      * @param string $format Format to use for the video
@@ -172,14 +171,14 @@ class VideoDownload
             $video->http_headers->{'User-Agent'}
         );
         $avconvProc = ProcessBuilder::create(
-            array(
+            [
                 $this->config->avconv,
                 '-v', 'quiet',
                 '-i', '-',
                 '-f', 'mp3',
                 '-vn',
-                'pipe:1'
-            )
+                'pipe:1',
+            ]
         );
 
         if (parse_url($video->url, PHP_URL_SCHEME) == 'rtmp') {
@@ -187,13 +186,13 @@ class VideoDownload
                 throw(new \Exception('Can\'t find rtmpdump'));
             }
             $builder = new ProcessBuilder(
-                array(
+                [
                     $this->config->rtmpdump,
                     '-q',
                     '-r',
                     $video->url,
-                    '--pageUrl', $video->webpage_url
-                )
+                    '--pageUrl', $video->webpage_url,
+                ]
             );
             if (isset($video->player_url)) {
                 $builder->add('--swfVfy');
@@ -226,19 +225,20 @@ class VideoDownload
             $chain = new Chain(
                 ProcessBuilder::create(
                     array_merge(
-                        array(
+                        [
                             $this->config->curl,
                             '--silent',
                             '--location',
                             '--user-agent', $video->http_headers->{'User-Agent'},
-                            $video->url
-                        ),
+                            $video->url,
+                        ],
                         $this->config->curl_params
                     )
                 )
             );
             $chain->add('|', $avconvProc);
         }
+
         return popen($chain->getProcess()->getCommandLine(), 'r');
     }
 }
diff --git a/composer.json b/composer.json
index c2884a9..7350def 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
   "type": "project",
   "require": {
     "smarty/smarty": "~3.1.29",
-    "rg3/youtube-dl": "~2016.08.12",
+    "rg3/youtube-dl": "~2016.09.08",
     "slim/slim": "~3.5.0",
     "mathmarques/smarty-view": "~1.1.0",
     "symfony/yaml": "~3.1.0",
@@ -33,11 +33,11 @@
       "type": "package",
       "package": {
         "name": "rg3/youtube-dl",
-        "version": "2016.08.12",
+        "version": "2016.09.08",
         "source": {
           "url": "https://github.com/rg3/youtube-dl.git",
           "type": "git",
-          "reference": "2016.08.12"
+          "reference": "2016.09.08"
         }
       }
     },
diff --git a/composer.lock b/composer.lock
index 965e802..d782024 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "85ec531cf9a73084ab531e5b781f8844",
-    "content-hash": "054a8bdbb08cfac744d4b28965fb6f17",
+    "hash": "a0f80c6bc52ec374622802fb83f64122",
+    "content-hash": "8d944e2e3dfabcc3c311c954932321f1",
     "packages": [
         {
             "name": "container-interop/container-interop",
@@ -176,16 +176,16 @@
         },
         {
             "name": "mathmarques/smarty-view",
-            "version": "1.1.0",
+            "version": "1.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/mathmarques/Smarty-View.git",
-                "reference": "66f4d28c564c0363eda18d3f5b85a4241b1c4ad1"
+                "reference": "c8f8501a0be4c290e1165fcb9e5064952ef6969d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/mathmarques/Smarty-View/zipball/66f4d28c564c0363eda18d3f5b85a4241b1c4ad1",
-                "reference": "66f4d28c564c0363eda18d3f5b85a4241b1c4ad1",
+                "url": "https://api.github.com/repos/mathmarques/Smarty-View/zipball/c8f8501a0be4c290e1165fcb9e5064952ef6969d",
+                "reference": "c8f8501a0be4c290e1165fcb9e5064952ef6969d",
                 "shasum": ""
             },
             "require": {
@@ -222,7 +222,7 @@
                 "template",
                 "view"
             ],
-            "time": "2016-03-31 00:41:59"
+            "time": "2016-08-25 19:04:49"
         },
         {
             "name": "nikic/fast-route",
@@ -401,11 +401,11 @@
         },
         {
             "name": "rg3/youtube-dl",
-            "version": "2016.08.12",
+            "version": "2016.09.08",
             "source": {
                 "type": "git",
                 "url": "https://github.com/rg3/youtube-dl.git",
-                "reference": "2016.08.12"
+                "reference": "2016.09.08"
             },
             "type": "library"
         },
@@ -605,16 +605,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v3.1.3",
+            "version": "v3.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "04c2dfaae4ec56a5c677b0c69fac34637d815758"
+                "reference": "e64e93041c80e77197ace5ab9385dedb5a143697"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/04c2dfaae4ec56a5c677b0c69fac34637d815758",
-                "reference": "04c2dfaae4ec56a5c677b0c69fac34637d815758",
+                "url": "https://api.github.com/repos/symfony/process/zipball/e64e93041c80e77197ace5ab9385dedb5a143697",
+                "reference": "e64e93041c80e77197ace5ab9385dedb5a143697",
                 "shasum": ""
             },
             "require": {
@@ -650,20 +650,20 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2016-07-28 11:13:48"
+            "time": "2016-08-16 14:58:24"
         },
         {
             "name": "symfony/yaml",
-            "version": "v3.1.3",
+            "version": "v3.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "1819adf2066880c7967df7180f4f662b6f0567ac"
+                "reference": "f291ed25eb1435bddbe8a96caaef16469c2a092d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/1819adf2066880c7967df7180f4f662b6f0567ac",
-                "reference": "1819adf2066880c7967df7180f4f662b6f0567ac",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/f291ed25eb1435bddbe8a96caaef16469c2a092d",
+                "reference": "f291ed25eb1435bddbe8a96caaef16469c2a092d",
                 "shasum": ""
             },
             "require": {
@@ -699,7 +699,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2016-07-17 14:02:08"
+            "time": "2016-09-02 02:12:52"
         }
     ],
     "packages-dev": [
@@ -759,16 +759,16 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.5.1",
+            "version": "1.5.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "a8773992b362b58498eed24bf85005f363c34771"
+                "reference": "da8529775f14f4fdae33f916eb0cf65f6afbddbc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/a8773992b362b58498eed24bf85005f363c34771",
-                "reference": "a8773992b362b58498eed24bf85005f363c34771",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/da8529775f14f4fdae33f916eb0cf65f6afbddbc",
+                "reference": "da8529775f14f4fdae33f916eb0cf65f6afbddbc",
                 "shasum": ""
             },
             "require": {
@@ -797,7 +797,7 @@
                 "object",
                 "object graph"
             ],
-            "time": "2015-11-20 12:04:31"
+            "time": "2016-09-06 16:07:05"
         },
         {
             "name": "phpdocumentor/reflection-common",
@@ -1253,16 +1253,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "5.5.2",
+            "version": "5.5.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "46ec2d1522ae8c9a12aca6b7650e0be78bbb0502"
+                "reference": "3e6e88e56c912133de6e99b87728cca7ed70c5f5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/46ec2d1522ae8c9a12aca6b7650e0be78bbb0502",
-                "reference": "46ec2d1522ae8c9a12aca6b7650e0be78bbb0502",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/3e6e88e56c912133de6e99b87728cca7ed70c5f5",
+                "reference": "3e6e88e56c912133de6e99b87728cca7ed70c5f5",
                 "shasum": ""
             },
             "require": {
@@ -1327,20 +1327,20 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2016-08-18 11:10:44"
+            "time": "2016-08-26 07:11:44"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
-            "version": "3.2.4",
+            "version": "3.2.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit-mock-objects.git",
-                "reference": "4e83390f64e7ce04fcaec2ce95cd72823b431d19"
+                "reference": "546898a2c0c356ef2891b39dd7d07f5d82c8ed0a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit-mock-objects/zipball/4e83390f64e7ce04fcaec2ce95cd72823b431d19",
-                "reference": "4e83390f64e7ce04fcaec2ce95cd72823b431d19",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit-mock-objects/zipball/546898a2c0c356ef2891b39dd7d07f5d82c8ed0a",
+                "reference": "546898a2c0c356ef2891b39dd7d07f5d82c8ed0a",
                 "shasum": ""
             },
             "require": {
@@ -1386,7 +1386,7 @@
                 "mock",
                 "xunit"
             ],
-            "time": "2016-08-17 09:33:51"
+            "time": "2016-09-06 16:07:45"
         },
         {
             "name": "sebastian/code-unit-reverse-lookup",
@@ -2040,16 +2040,16 @@
         },
         {
             "name": "symfony/var-dumper",
-            "version": "v3.1.3",
+            "version": "v3.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/var-dumper.git",
-                "reference": "076235b750137518408f1bc17a8e69b43211836a"
+                "reference": "62ee73706c421654a4c840028954510277f7dfc8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/076235b750137518408f1bc17a8e69b43211836a",
-                "reference": "076235b750137518408f1bc17a8e69b43211836a",
+                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/62ee73706c421654a4c840028954510277f7dfc8",
+                "reference": "62ee73706c421654a4c840028954510277f7dfc8",
                 "shasum": ""
             },
             "require": {
@@ -2099,7 +2099,7 @@
                 "debug",
                 "dump"
             ],
-            "time": "2016-07-26 08:04:17"
+            "time": "2016-08-31 09:05:42"
         },
         {
             "name": "webmozart/assert",
diff --git a/controllers/FrontController.php b/controllers/FrontController.php
index 177e636..2348db8 100644
--- a/controllers/FrontController.php
+++ b/controllers/FrontController.php
@@ -1,41 +1,45 @@
 <?php
 /**
- * FrontController class
+ * FrontController class.
  */
 namespace Alltube\Controller;
 
-use Alltube\VideoDownload;
 use Alltube\Config;
-use Slim\Http\Stream;
+use Alltube\VideoDownload;
+use Slim\Container;
 use Slim\Http\Request;
 use Slim\Http\Response;
-use Slim\Container;
+use Slim\Http\Stream;
 
 /**
- * Main controller
+ * Main controller.
  */
 class FrontController
 {
     /**
-     * Config instance
+     * Config instance.
+     *
      * @var Config
      */
     private $config;
 
     /**
-     * VideoDownload instance
+     * VideoDownload instance.
+     *
      * @var VideoDownload
      */
     private $download;
 
     /**
-     * Slim dependency container
+     * Slim dependency container.
+     *
      * @var Container
      */
     private $container;
 
     /**
-     * FrontController constructor
+     * FrontController constructor.
+     *
      * @param Container $container Slim dependency container
      */
     public function __construct(Container $container)
@@ -46,7 +50,7 @@ class FrontController
     }
 
     /**
-     * Display index page
+     * Display index page.
      *
      * @param Request  $request  PSR-7 request
      * @param Response $response PSR-7 response
@@ -58,16 +62,16 @@ class FrontController
         $this->container->view->render(
             $response,
             'index.tpl',
-            array(
-                'convert'=>$this->config->convert,
-                'class'=>'index',
-                'description'=>'Easily download videos from Youtube, Dailymotion, Vimeo and other websites.'
-            )
+            [
+                'convert'     => $this->config->convert,
+                'class'       => 'index',
+                'description' => 'Easily download videos from Youtube, Dailymotion, Vimeo and other websites.',
+            ]
         );
     }
 
     /**
-     * Display a list of extractors
+     * Display a list of extractors.
      *
      * @param Request  $request  PSR-7 request
      * @param Response $response PSR-7 response
@@ -79,18 +83,18 @@ class FrontController
         $this->container->view->render(
             $response,
             'extractors.tpl',
-            array(
-                'extractors'=>$this->download->listExtractors(),
-                'class'=>'extractors',
-                'title'=>'Supported websites',
-                'description'
-                    =>'List of all supported websites from which Alltube Download can extract video or audio files'
-            )
+            [
+                'extractors'  => $this->download->listExtractors(),
+                'class'       => 'extractors',
+                'title'       => 'Supported websites',
+                'description' => 'List of all supported websites from which Alltube Download '.
+                    'can extract video or audio files',
+            ]
         );
     }
 
     /**
-     * Dislay information about the video
+     * Dislay information about the video.
      *
      * @param Request  $request  PSR-7 request
      * @param Response $response PSR-7 response
@@ -101,36 +105,38 @@ class FrontController
     {
         $params = $request->getQueryParams();
         $this->config = Config::getInstance();
-        if (isset($params["url"])) {
+        if (isset($params['url'])) {
             if (isset($params['audio'])) {
                 try {
-                    $url = $this->download->getURL($params["url"], 'mp3[protocol^=http]');
+                    $url = $this->download->getURL($params['url'], 'mp3[protocol^=http]');
+
                     return $response->withRedirect($url);
                 } catch (\Exception $e) {
                     $response = $response->withHeader(
                         'Content-Disposition',
                         'attachment; filename="'.
-                        $this->download->getAudioFilename($params["url"], 'bestaudio/best').'"'
+                        $this->download->getAudioFilename($params['url'], 'bestaudio/best').'"'
                     );
                     $response = $response->withHeader('Content-Type', 'audio/mpeg');
 
                     if ($request->isGet()) {
-                        $process = $this->download->getAudioStream($params["url"], 'bestaudio/best');
+                        $process = $this->download->getAudioStream($params['url'], 'bestaudio/best');
                         $response = $response->withBody(new Stream($process));
                     }
+
                     return $response;
                 }
             } else {
-                $video = $this->download->getJSON($params["url"]);
+                $video = $this->download->getJSON($params['url']);
                 $this->container->view->render(
                     $response,
                     'video.tpl',
-                    array(
-                        'video'=>$video,
-                        'class'=>'video',
-                        'title'=>$video->title,
-                        'description'=>'Download "'.$video->title.'" from '.$video->extractor_key
-                    )
+                    [
+                        'video'       => $video,
+                        'class'       => 'video',
+                        'title'       => $video->title,
+                        'description' => 'Download "'.$video->title.'" from '.$video->extractor_key,
+                    ]
                 );
             }
         } else {
@@ -139,10 +145,12 @@ class FrontController
     }
 
     /**
-     * Display an error page
-     * @param  Request   $request   PSR-7 request
-     * @param  Response  $response  PSR-7 response
-     * @param  \Exception $exception Error to display
+     * Display an error page.
+     *
+     * @param Request    $request   PSR-7 request
+     * @param Response   $response  PSR-7 response
+     * @param \Exception $exception Error to display
+     *
      * @return Response HTTP response
      */
     public function error(Request $request, Response $response, \Exception $exception)
@@ -150,17 +158,18 @@ class FrontController
         $this->container->view->render(
             $response,
             'error.tpl',
-            array(
-                'errors'=>$exception->getMessage(),
-                'class'=>'video',
-                'title'=>'Error'
-            )
+            [
+                'errors' => $exception->getMessage(),
+                'class'  => 'video',
+                'title'  => 'Error',
+            ]
         );
+
         return $response->withStatus(500);
     }
 
     /**
-     * Redirect to video file
+     * Redirect to video file.
      *
      * @param Request  $request  PSR-7 request
      * @param Response $response PSR-7 response
@@ -170,19 +179,21 @@ class FrontController
     public function redirect(Request $request, Response $response)
     {
         $params = $request->getQueryParams();
-        if (isset($params["url"])) {
+        if (isset($params['url'])) {
             try {
-                $url = $this->download->getURL($params["url"], $params["format"]);
+                $url = $this->download->getURL($params['url'], $params['format']);
+
                 return $response->withRedirect($url);
             } catch (\Exception $e) {
                 $response->getBody()->write($e->getMessage());
+
                 return $response->withHeader('Content-Type', 'text/plain');
             }
         }
     }
 
     /**
-     * Output JSON info about the video
+     * Output JSON info about the video.
      *
      * @param Request  $request  PSR-7 request
      * @param Response $response PSR-7 response
@@ -192,13 +203,14 @@ class FrontController
     public function json(Request $request, Response $response)
     {
         $params = $request->getQueryParams();
-        if (isset($params["url"])) {
+        if (isset($params['url'])) {
             try {
-                $video = $this->download->getJSON($params["url"]);
+                $video = $this->download->getJSON($params['url']);
+
                 return $response->withJson($video);
             } catch (\Exception $e) {
                 return $response->withJson(
-                    array('success'=>false, 'error'=>$e->getMessage())
+                    ['success' => false, 'error' => $e->getMessage()]
                 );
             }
         }
diff --git a/index.php b/index.php
index 60026bf..0653081 100644
--- a/index.php
+++ b/index.php
@@ -1,6 +1,6 @@
 <?php
+
 require_once __DIR__.'/vendor/autoload.php';
-use Alltube\VideoDownload;
 use Alltube\Controller\FrontController;
 
 if (strpos($_SERVER['REQUEST_URI'], '/index.php') !== false) {
@@ -22,26 +22,26 @@ $container['view'] = function ($c) {
 
 $controller = new FrontController($container);
 
-$container['errorHandler'] = array($controller, 'error');
+$container['errorHandler'] = [$controller, 'error'];
 
 $app->get(
     '/',
-    array($controller, 'index')
+    [$controller, 'index']
 )->setName('index');
 $app->get(
     '/extractors',
-    array($controller, 'extractors')
+    [$controller, 'extractors']
 )->setName('extractors');
 $app->get(
     '/video',
-    array($controller, 'video')
+    [$controller, 'video']
 )->setName('video');
 $app->get(
     '/redirect',
-    array($controller, 'redirect')
+    [$controller, 'redirect']
 )->setName('redirect');
 $app->get(
     '/json',
-    array($controller, 'json')
+    [$controller, 'json']
 );
 $app->run();
diff --git a/package.json b/package.json
index fcaf214..894e62f 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "alltube",
   "description": "HTML GUI for youtube-dl",
-  "version": "0.5.0",
+  "version": "0.5.2",
   "author": "Pierre Rudloff",
   "bugs": "https://github.com/Rudloff/alltube/issues",
   "dependencies": {
diff --git a/tests/ConfigTest.php b/tests/ConfigTest.php
index 8ea8e84..9e7e1d8 100644
--- a/tests/ConfigTest.php
+++ b/tests/ConfigTest.php
@@ -1,26 +1,33 @@
 <?php
 /**
- * ConfigTest class
+ * ConfigTest class.
  */
 namespace Alltube\Test;
 
 use Alltube\Config;
 
 /**
- * Unit tests for the Config class
+ * Unit tests for the Config class.
  */
 class ConfigTest extends \PHPUnit_Framework_TestCase
 {
-
+    /**
+     * Config class instance.
+     *
+     * @var Config
+     */
     private $config;
 
+    /**
+     * Prepare tests.
+     */
     protected function setUp()
     {
         $this->config = Config::getInstance('config_test.yml');
     }
 
     /**
-     * Test the getInstance function
+     * Test the getInstance function.
      *
      * @return void
      */
@@ -35,6 +42,11 @@ class ConfigTest extends \PHPUnit_Framework_TestCase
         $this->assertInternalType('string', $this->config->rtmpdump);
     }
 
+    /**
+     * Test the getInstance function with the CONVERT environment variable.
+     *
+     * @return void
+     */
     public function testGetInstanceWithEnv()
     {
         putenv('CONVERT=1');
diff --git a/tests/VideoDownloadTest.php b/tests/VideoDownloadTest.php
index c0ce2d7..8e5d705 100644
--- a/tests/VideoDownloadTest.php
+++ b/tests/VideoDownloadTest.php
@@ -1,24 +1,25 @@
 <?php
 /**
- * VideoDownloadTest class
+ * VideoDownloadTest class.
  */
 namespace Alltube\Test;
 
 use Alltube\VideoDownload;
 
 /**
- * Unit tests for the VideoDownload class
+ * Unit tests for the VideoDownload class.
  */
 class VideoDownloadTest extends \PHPUnit_Framework_TestCase
 {
     /**
-     * VideoDownload instance
+     * VideoDownload instance.
+     *
      * @var VideoDownload
      */
     private $download;
 
     /**
-     * Initialize properties used by test
+     * Initialize properties used by test.
      */
     protected function setUp()
     {
@@ -26,7 +27,7 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Destroy properties after test
+     * Destroy properties after test.
      */
     protected function tearDown()
     {
@@ -34,7 +35,7 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test listExtractors function
+     * Test listExtractors function.
      *
      * @return void
      */
@@ -45,14 +46,14 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getURL function
+     * Test getURL function.
      *
-     * @param string $url    URL
-     * @param string $format Format
+     * @param string $url      URL
+     * @param string $format   Format
      * @param string $filename Filename
-     * @param string $domain Domain
+     * @param string $domain   Domain
      *
-     * @return       void
+     * @return void
      * @dataProvider urlProvider
      */
     public function testGetURL($url, $format, $filename, $domain)
@@ -62,11 +63,11 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getURL function errors
+     * Test getURL function errors.
      *
      * @param string $url URL
      *
-     * @return            void
+     * @return void
      * @expectedException Exception
      * @dataProvider      ErrorUrlProvider
      */
@@ -76,67 +77,67 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Provides URLs for tests
+     * Provides URLs for tests.
      *
      * @return array[]
      */
     public function urlProvider()
     {
-        return array(
-            array(
+        return [
+            [
                 'https://www.youtube.com/watch?v=M7IpKCZ47pU', null,
                 "It's Not Me, It's You - Hearts Under Fire-M7IpKCZ47pU.mp4",
                 'googlevideo.com',
-                "It's Not Me, It's You - Hearts Under Fire-M7IpKCZ47pU.mp3"
-            ),
-            array(
+                "It's Not Me, It's You - Hearts Under Fire-M7IpKCZ47pU.mp3",
+            ],
+            [
                 'https://www.youtube.com/watch?v=RJJ6FCAXvKg', 22,
                 "'Heart Attack' - Demi Lovato ".
-                "(Sam Tsui & Against The Current)-RJJ6FCAXvKg.mp4",
+                '(Sam Tsui & Against The Current)-RJJ6FCAXvKg.mp4',
                 'googlevideo.com',
                 "'Heart Attack' - Demi Lovato ".
-                "(Sam Tsui & Against The Current)-RJJ6FCAXvKg.mp3"
-            ),
-            array(
+                '(Sam Tsui & Against The Current)-RJJ6FCAXvKg.mp3',
+            ],
+            [
                 'https://vimeo.com/24195442', null,
-                "Carving the Mountains-24195442.mp4",
+                'Carving the Mountains-24195442.mp4',
                 'vimeocdn.com',
-                "Carving the Mountains-24195442.mp3"
-            ),
-            array(
+                'Carving the Mountains-24195442.mp3',
+            ],
+            [
                 'http://www.bbc.co.uk/programmes/b039g8p7', 'bestaudio/best',
-                "Leonard Cohen, Kaleidoscope - BBC Radio 4-b039d07m.flv",
+                'Leonard Cohen, Kaleidoscope - BBC Radio 4-b039d07m.flv',
                 'bbcodspdns.fcod.llnwd.net',
-                "Leonard Cohen, Kaleidoscope - BBC Radio 4-b039d07m.mp3"
-            ),
-            array(
+                'Leonard Cohen, Kaleidoscope - BBC Radio 4-b039d07m.mp3',
+            ],
+            [
                 'http://www.rtl2.de/sendung/grip-das-motormagazin/folge/folge-203-0', 'bestaudio/best',
-                "GRIP sucht den Sommerkönig-folge-203-0.f4v",
+                'GRIP sucht den Sommerkönig-folge-203-0.f4v',
                 'edgefcs.net',
-                "GRIP sucht den Sommerkönig-folge-203-0.mp3"
-            )
-        );
+                'GRIP sucht den Sommerkönig-folge-203-0.mp3',
+            ],
+        ];
     }
 
     /**
-     * Provides incorrect URLs for tests
+     * Provides incorrect URLs for tests.
      *
      * @return array[]
      */
     public function errorUrlProvider()
     {
-        return array(
-            array('http://example.com/video')
-        );
+        return [
+            ['http://example.com/video'],
+        ];
     }
 
     /**
-     * Test getJSON function
+     * Test getJSON function.
      *
      * @param string $url    URL
      * @param string $format Format
      *
-     * @return       void
+     * @return void
      * @dataProvider URLProvider
      */
     public function testGetJSON($url, $format)
@@ -151,11 +152,11 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getJSON function errors
+     * Test getJSON function errors.
      *
      * @param string $url URL
      *
-     * @return            void
+     * @return void
      * @expectedException Exception
      * @dataProvider      ErrorURLProvider
      */
@@ -165,13 +166,13 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getFilename function
+     * Test getFilename function.
      *
-     * @param string $url    URL
-     * @param string $format Format
+     * @param string $url      URL
+     * @param string $format   Format
      * @param string $filename Filename
      *
-     * @return       void
+     * @return void
      * @dataProvider urlProvider
      */
     public function testGetFilename($url, $format, $filename)
@@ -181,11 +182,11 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getFilename function errors
+     * Test getFilename function errors.
      *
      * @param string $url URL
      *
-     * @return            void
+     * @return void
      * @expectedException Exception
      * @dataProvider      ErrorUrlProvider
      */
@@ -195,15 +196,15 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getAudioFilename function
+     * Test getAudioFilename function.
      *
-     * @param string $url    URL
-     * @param string $format Format
-     * @param string $filename Filename
-     * @param string $domain Domain
+     * @param string $url           URL
+     * @param string $format        Format
+     * @param string $filename      Filename
+     * @param string $domain        Domain
      * @param string $audioFilename MP3 audio file name
      *
-     * @return       void
+     * @return void
      * @dataProvider urlProvider
      */
     public function testGetAudioFilename($url, $format, $filename, $domain, $audioFilename)
@@ -213,12 +214,12 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getAudioStream function
+     * Test getAudioStream function.
      *
      * @param string $url    URL
      * @param string $format Format
      *
-     * @return       void
+     * @return void
      * @dataProvider urlProvider
      */
     public function testGetAudioStream($url, $format)
@@ -229,12 +230,12 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getAudioStream function without avconv
+     * Test getAudioStream function without avconv.
      *
      * @param string $url    URL
      * @param string $format Format
      *
-     * @return            void
+     * @return void
      * @expectedException Exception
      * @dataProvider      urlProvider
      */
@@ -246,12 +247,12 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
     }
 
     /**
-     * Test getAudioStream function without curl or rtmpdump
+     * Test getAudioStream function without curl or rtmpdump.
      *
      * @param string $url    URL
      * @param string $format Format
      *
-     * @return            void
+     * @return void
      * @expectedException Exception
      * @dataProvider      urlProvider
      */