got phase 1 of galactic generator working

Needs heavy optimization. As is, it currently generates an average of
~24,672,376 lens flares when you can see the whole galaxy, which is
obviously problematic.

However, it is generating stars based on the camera's view, which is
cool.

Next up:
-Choose from a set of prefabs that includes stars, star clusters,
nebulae, etc. when generating. (must remember to enable mipmaps for
those guys)
-After that is combining some of those objects as they get farther away.

THAT will be the hard part. Probably going to involve Rendertextures,
which I don't know how to use yet.
Added .csproj files to .gitignore

Those things are just going to cause problems. Monodevelop will
regenerate them as needed. they shouldn't be pushed up to git.