Moved the AddedToNewScene call after the SceneViewportChanged so that when this method is called content size is already calculated.
Moved the AddedToNewScene call after the SceneViewportChanged so that when this method is called content size is already calculated.

+ Added camera support in AddChild.  If there is not one assigned then it will try to obtain the camera from it's parent, layer or scene.  This allows correct content size calculations before it is needed in the other methods.

zmaruo/CocosSharp,hig-ag/CocosSharp,haithemaraissia/CocosSharp,TukekeSoft/CocosSharp,netonjm/CocosSharp,hig-ag/CocosSharp,mono/CocosSharp,mono/CocosSharp,haithemaraissia/CocosSharp,TukekeSoft/CocosSharp,netonjm/CocosSharp,MSylvia/CocosSharp,zmaruo/CocosSharp,MSylvia/CocosSharp