Update CCClass.js

add object instance id
Update CCActionManager.js

Find a way to optimize the object
init comment
Add an object instance id
Find a way to optimize the object
fixed typo "because"
fix the bug that  i  is incorrect after remove a  object
preliminary support for linebreakmodes. so far just doesnt break newlines if a non-line-breaking-mode is specified. this parallels how CCLabelTTF works on the iphone version.
Merge branch 'linebreakmodes' into mydevelop
remove log msg
Merge branch 'linebreakmodes' into mydevelop
oops missed one
Merge branch 'retain-returns-this' into mydevelop
Merge pull request #1272 from luisparravicini/issue-3292

fixed typo "becuase"
Merge pull request #1273 from NijiadeIX/develop

fix the bug : i is incorrect after remove a object
Merge pull request #1271 from xbruce/develop

Update CCClass CCActionManager
Delete README

unused file
Merge pull request #1274 from csaftoiu/NodeRGBA-create

add cc.NodeRGBA.create()
Adding property to prototype
Merge pull request #1277 from ShengxiangChen/issue_ccClass

Adding property to prototype
Closed #3284: Refactoring TMXLayer for better performance

Add sub cache canvas to reduce the cache size, cache is used only when
user’s layer is too big, otherwise use default version.