Beta 0.0.2

-  Set drawing font now resets to builtin default if instance of
RAGE::Font is disposed.
- Fixed color setting for RAGE::Graphics.setBackgroundColor, now is
using float values instead of integer ones.
- Added constant RAGE::Input::SPACEBAR
- Added RAGE::Draw.roundRect which draws rounded rectangles.
- Added RAGE::Draw.fillRect which draws filled rounded rectangles.
- Added RAGE::Graphics.setBackgroundColorO to set color from an instance
of RAGE::Color.
- Updated documentation.