add docs and docs link

docs/health-check.md

@@ -0,0 +1,28 @@
+# Health check troubleshooting
+
+*tmux-fingers* performs a health check on startup to ensure that your system has all dependencies needed to run smoothly.
+
+They are not much, and in most GNU/linux environments these are the defaults anyway.
+
+## gawk not found
+
+Install `gawk` package.
+
+### OSX
+
+`$ brew install gawk`
+
+### Linux
+
+* Ubuntu: `$ sudo aptitude install gawk`
+* Arch linux: `$ sudo pacman -S install gawk`
+
+## bash version is too old
+
+This probably means you are running OSX, which ships with *bash 3*. In order to upgrade to *bash 4* you need need to run:
+
+`$ brew install bash`
+
+## tmux version is too old
+
+You can install latest *tmux* from source, check https://github.com/tmux/tmux

scripts/health-check.sh

@@ -68,7 +68,9 @@ function perform_health_check() {
       : # waiting for-tmux
     done
 
-    tmux run "echo -e 'tmux-fingers health-check:\\n\\n'; cat $health_tmp"
+    log_health "For more info check $HELP_LINK"
+    log_health "To skip this check add \"set -g @fingers-skip-health-check 1\" to your tmux conf"
+    tmux run "echo -e \"tmux-fingers health-check:\"; cat $health_tmp"
   fi
 
   rm -rf "$health_tmp"