fixed #2148 fixed two bugs of ChipmunkTest that cc.Menu remain touchable after replaceScene
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests into Iss2148_FixCCMenuBug
Merge pull request #163 from dingpinglv/Iss2148_FixCCMenuBugForChipmunk

fixed #2148 fixed two bugs of ChipmunkTest that cc.Menu remain touchable after replaceScene