Merge pull request #1 from cocos2d/v3

update
Merge pull request #3 from cocos2d/v3

update
Merge pull request #7 from cocos2d/v3

update
Merge pull request #9 from cocos2d/v3

update
Merge branch 'v3-official'
Merge pull request #10 from cocos2d/v3

update
add simple implement of WebView for win32

1.add simple implement of WebView for win32
2.Modify `std::string' to `const std::string &' as issues 7958 said
3.Open the test case in cpp-tests
fix compile errors
Update CocosGUI.h
fix compile errors
Merge branch 'v3_WebView_win32' of https://github.com/wohaaitinciu/cocos2d-x into v3_WebView_win32
fix link errors
fix compile error
compile error & code spelling error

1.fix compile error on win32
2.modify spelling error
added Node::getCascadeBoundingBox()
fix compile error
fix compile error
replaced "NULL" with "nullptr"
compile error
moved getCascadeBoundingBox() to utils