Call saveUndoState when inspector block selector is changed. (mark document as dirty)
Merge pull request #260 from pierrepaullavoie/upstream-257

Call saveUndoState when inspector block selector is changed.
Fixes issue with setting empty blocks
Updates how last keyframe of visible property is displayed
Update Cocos2d-html5 to version v2.1.2 beta.
Merge pull request #278 from linshun/develop

Update Cocos2d-html5 to version v2.1.2 beta.
Merge branch 'master' of github.com:cocos2d/CocosBuilder
Added Roadmap for version 3 to documentation.
Added to roadmap
#281 fixed
#249 fixed
Merge pull request #297 from longyangxi/master

#249 bug fixed
Merge pull request #1 from cocos2d/develop

merge the latest develop
#291 fixed
Merge pull request #306 from longyangxi/dev329

#291 fixed
Added About window with current version number
Added classes for handling Debugger connection
Made hash longer for commit version
Updated about box icon
Started work on debug connection