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
ios run ok
Merge pull request #5 from super626/mergecocos3.0

Mergecocos3.0
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
Merge pull request #8 from super626/mergecocos3.0

change fulldemo res
Merge pull request #9 from super626/mergecocos3.0

Mergecocos3.0
Merge pull request #13 from houguohua/develop

doc
Merge pull request #16 from houguohua/mergecocos3.0

Mergecocos3.0