add the ability to get the content so it can be modified (like changing a texture of a UI element)
added a UIGroup container that allows horizontal and vertical grouping. this makes it easier to add multiple items (like keys and score numbers) and still use the BasicUILayout. Added a score in which you pass a list of 10 textures (0 - 9) and it will draw out the score
adjusted these to compensate for the content scaling and camera zooming. this may need to be looked at