Fixed #5941: Correct MontionStreak to MotionStreak
Merge branch 'Renderer' of https://github.com/cocos2d/cocos2d-html5 into Iss5941_WebGLRenderer
Merge pull request #2340 from dingpinglv/Iss5941_WebGLRenderer

Fixed #5941: Correct MontionStreak to MotionStreak