cocos2d google play game service

http://www.cocos2d-iphone.org/forums/topic/integration-with-google-play-games-services/

http://www.cocos2d-x.org/boards/6/topics/28296

http://questiontrack.com/in-my-cocos2dx-project-ldquogoogle-play-game-servicesrdquo-was-applied-1151836.html