Update Rakefile.
Update Rakefile.

Sellegit/JavaScriptBridge,kishikawakatsumi/JavaScriptBridge,ywzw2013/JavaScriptBridge,chenee/JavaScriptBridge,dachaoisme/JavaScriptBridge,Sellegit/JavaScriptBridge,kishikawakatsumi/JavaScriptBridge,chenee/JavaScriptBridge