Merge branch 'ForReflection' into develop

Conflicts:
	plugin/protocols/platform/ios/PluginUtilsIOS.mm
Merge branch 'ForReflection' into develop

Conflicts:
	plugin/protocols/platform/ios/PluginUtilsIOS.mm
Add support for C++ 11in samples
issue #2254 : Add plugin weibo for iOS.
fixed #2254 : Add sample code for plugin weibo on iOS.
Update the JS binding code of plugin.
Update the license in the sample code.
Update the flurry SDK version.
Removing CODE_SIGN_IDETITY section in prom.pbxproj.

Conflicts:
	samples/Cpp/TestCpp/proj.ios/TestCpp.xcodeproj/project.pbxproj
	samples/Cpp/TestCpp/proj.mac/TestCpp.xcodeproj/project.pbxproj
Merge pull request #2782 from natural-law/develop

Update the flurry SDK version.
Add plugin twitter for iOS.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop

Conflicts:
	plugin/samples/HelloSocial/proj.ios/HelloSocial.xcodeproj/project.pbxproj
Add C++ 11 support for iOS projects.
Resolve the bug in the reflection of plugin.
Modify the license of plugin twitter.
Delete the developer ID in project config.
issue #2284: merge master and fixed some conflicts
Add plugin Admob for iOS.
Add sample code for plugin admob on iOS.
Add advertisement type for more Ads plugins.