Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
isssue #5281: assetsmanager compiling issue
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Issue #5335: Add spine manual binding functions
Merge pull request #413 from joshuastray/master

isssue #5281: assetsmanager compiling issue and add spine,socketio,websockets in template