Adding an ortho camera.
Changing MeshRenderer to derive from a more generic Renderer.
Refactoring SceneGraph to be SceneGraph3D, derived from a more generic SceneGraph.
Adding a SceneGraphUi.
Adding hard coded implementations of device width and height in FRAMEWORK::DeviceProperties.
Using actual screen dimensions on iOS.
Merge pull request #16 from VajraFramework/ui

Ui