Updated .gitattributes to reflect new project structure
Added shebang to main program file
Changed module paths to relative, which fixes ImportError's in
an installed version of the game
Resources are now loaded via an absolute OS path, which allows
Pyglet to find them on an installed version of Pysteroids
Added a command to let setuptools create an entry point to the game
in the user's bin or scripts folder
Fixed formatting for main method
Added a dependency link to Pyglet 1.2alpha1, which will be downloaded
if a user doesn't meet the requirement version
Added README.txt for PyPI
Added long description using README.txt