fix bug on create a sequence objcet or a spawn object using new method
Merge pull request #1942 from wuzhiming/ccpool

add CCPool into extensions
Merge pull request #1943 from AaronRZH/develop

fix bug on create a sequence objcet or a spawn object by using new method
Fixed #5626: call setUpdateEnabled(false) in onExit function
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into develop
Improve some docs
Merge pull request #1945 from pandamicro/develop

Fixed #5626: call setUpdateEnabled(false) in onExit function
fixed scrollView bugs on paused
Merge pull request #1946 from akira-cn/develop

fixed scrollView bugs on paused
Feature #3949: Refactor cc.pool from class to singleton object
Merge pull request #1947 from pandamicro/develop

Feature #3949: Refactor cc.pool from class to singleton object