Update demo and README overview image

README.md

@@ -5,7 +5,8 @@ of the theme were described in a [blog post](http://bloerg.net/2014/09/20/a-mode
 Not convinced?  Have a look at the [demo slides](demo.pdf).
 
 
-![Sample](http://i.imgur.com/wP4uGbS.png)
+![Sample](http://i.imgur.com/Bxu52fz.png)
+
 
 
 ### Installation
@@ -65,6 +66,7 @@ Option `usetotalslideindicator` creates slide numbering in lower right corner
 in following format: #current/#total. By default, just current page number is
 printed.
 
+
 #### Commands
 
 The `\plain{title=[]}{body}` command sets a slide in plain dark colors