GUIManager -> GUIScene + GUIElement
update README
fixing README extension. Fixes to vec types.
update README
drawScene, drawModel as private in Scene
XMLHelper( GUIScene, Assets )
XMLScene, example.xml
MousePicking working again (after new draw flow)
RendererHelper (drawModel) + refactoring.
CameraHelper. MousePicking + vector<Scene>
MousePicking doesn't check for camera anymore
Merge branch 'master' of https://github.com/ghostec/White

Conflicts:
	Renderer/src/Camera.cpp
ShadowMap hardcoded camera&light position