Merge pull request #1 from cocos2d/master

merge
Issue #4769: Correct the transition functions
Fixed #4769: Manual bind Scene::init to solve the bug
Fixed #4773: bug of UIButton's size when Scale9Enabled in test cases fixed
Revert "Issue #4741: Widget's addNode renamed to addChild"

This reverts commit dceecb9651d933649da61f5257a4065d6db47b33.
Issue #4741: Temporary fix for addNode function of ccui.Widget
Update README.md with prebuilt projects and alpha 2 informations
Fixed #4774: auto full screen switch function added to cc.view in JSB
Merge pull request #261 from pandamicro/master

Fix bugs for alpha 2 release
Issue #4608 Fixed a bug that cc.DIRECTOR_PROJECTION_3D is error
Merge pull request #262 from VisualSJ/master

Issue #4608 Fixed a bug that cc.DIRECTOR_PROJECTION_3D is error
Remove logs in jsb_debugger.js
Update Cocos2d-html5
Merge pull request #263 from pandamicro/master

Remove logs in jsb_debugger.js
Issue #4757: update the ChangeLog of Cocos2d-JS
Issue #4757: update the ChangeLog of Cocos2d-JS
Merge pull request #264 from dingpinglv/Iss4757_ReleaseV3_A2

Issue #4757: update the ChangeLog of Cocos2d-JS
Revert "Fixed #4749: SpiderMonkey compiled for arm64 architecture"

This reverts commit 408283465a17493c6b5d5bebed32e425bdab9c33.
Issue #4749: Add SpiderMonkey arm64 only precompiled file
Issue #4757: update the reference of cocos2d-html5