fixed #2227 Synchronous cc.ScrollView to latest version of Cocos2d-X
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2227_SyncScrollView
Merge pull request #949 from dingpinglv/Iss2227_SyncScrollView

fixed #2227 Synchronous cc.ScrollView to latest version of Cocos2d-X