Update Ember.js documentation (2.2.0)

lib/docs/scrapers/ember.rb

@@ -3,7 +3,7 @@ module Docs
     self.name = 'Ember.js'
     self.slug = 'ember'
     self.type = 'ember'
-    self.version = '2.1.0'
+    self.version = '2.2.0'
     self.base_url = 'http://emberjs.com/api/'
     self.links = {
       home: 'http://emberjs.com/',