fixed #2082 fixed a bug of cc.EaseElastic, Sync parameters of cc.LabelAtlas's initWithString function to Cocos2d-x
Merge branch 'master' of https://github.com/cocos2d/cocos2d-html5 into Iss2082_FixSomeBugs
Merge pull request #904 from dingpinglv/Iss2082_FixSomeBugs

fixed #2082 fixed a bug of cc.EaseElastic, Sync parameters of cc.LabelAtlas's initWithString function to Cocos2d-x