very brief start on mouse input. tanderegg will take it from here.
Added basic FPS movement (no pitch yet)
Merge pull request #31 from tanderegg/develop-origin

Created GLFPSController, added mouse controllers (SDL Only at the moment)
Cleaned up SDL mouse for FPS

* no more "drift" if you pick up your mouse
* mouse is properly grabbed and hidden (toggle with 'L')

other: GLMesh merged with tanderegg's changes; shipobj materials load