Bump version for 0.12.0.0

Author: zpao

lib/react/rails/version.rb

@@ -2,7 +2,7 @@ module React
   module Rails
     # Version numbers will track react-source, but we'll add another level so
     # that we can increment, but have some amount of stability.
-    VERSION = '0.11.1.0'
+    VERSION = '0.12.0.0'
   end
 end