README.md in lastfm-1.27.0 vs README.md in lastfm-1.27.1

- old
+ new

@@ -22,9 +22,10 @@
 ## Supported Rubies
 
 * 1.9.3
 * 2.0.0
 * 2.1.0
+* 2.2.0
 
 ## Supported API Methods
 
 It supports methods which require [authentication](http://www.last.fm/api/authentication).
 