Updates README file to remove "BETA" flag from version number listing.

Author: mattyza

README.mdown

@@ -3,7 +3,7 @@ http://www.woothemes.com/flexslider/ - Copyright (c) 2012 WooThemes
 
 ## Updates
 
-** Version 2.2.0 BETA**
+** Version 2.2.0**
 
 - Fixed event handler conflicts with devices that are both click and touch enabled. e.g., Windows 8.
 - Made all slider variables public, stored in `slider.vars`. This allows manipulation of `slider.vars.minItems` and `slider.vars.maxItems` on the fly to create different fluid grids at certain breakpoints. [Check out this example demonstrating a basic technique](http://flexslider.woothemes.com/dynamic-carousel-min-max.html)