added pivotal updates to the site
can add more players; domElement is now an instance variable
Refactored gs_renderer a little
Merge branch 'master' into pivotal
Fixed zombie bullets bug, added obstacle rendering, using three.js for debugging
Hacky way to get selection working in 3D
Merge branch 'master' into 12-player-support
Fix tests
Added lots of documentation
Fixed a bug in master
Merge branch 'master' into 12-player-support
Merge pull request #56 from hellochar/12-player-support

multi-player support
Merge branch 'master' into render_fixes; only show your selected units

Conflicts:
	game/static/game/js/game.js
Merge pull request #58 from hellochar/render_fixes

Added obstacle rendering and selection circle rendering
Merge pull request #52 from hellochar/pivotal

added pivotal updates to the site
Merged with master
Fixed a bug that allowed bullet piercing