Merge pull request #480 from pandamicro/master

Fixed #5566: Remove readonly prop declaration for Scene's init function
Issue #5096: Reduction TouchesTest.js
Merge pull request #482 from VisualSJ/master

Issue #5096: Reduction TouchesTest.js
Merge pull request #481 from pandamicro/master

Update Cocos2d-x v3 develop, add jsb namespace and bug fixes
Fixed #5572: [JSB]Bind AnimationData and its related functions
Update -x
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js