new tools and doc
new doc
cubemap add buffer
Merge branch 'develop' of github.com:houguohua/cocos3d-x into develop
Resolution adaption
device resolution auto change
Merge branch 'develop' of github.com:houguohua/cocos3d-x into develop

Conflicts:
	EngineDemo/Classes/AppDelegate.cpp
	EngineDemo/Classes/FullDemo/FullDemoLayer.cpp
	cocos3d/C3DRenderSystem.cpp
device resolution ratio change
delete useless code
Merge pull request #6 from houguohua/develop

cocos3d-x publish
Delete ModelExporter.exe
Merge pull request #11 from houguohua/develop

Delete ModelExporter.exe
new doc
Merge branch 'develop' of github.com:houguohua/cocos3d-x into develop
Merge pull request #7 from lvlonggame/develop

new doc
add ui
Merge branch 'mergecocos3.0' of https://github.com/super626/cocos3d-x into mergecocos3.0
add submodule cocos2d-x
Merge pull request #9 from super626/mergecocos3.0

Mergecocos3.0
update submodule to rc0
2dx dependence migrate to submodule (IOS run well)