Bullet polygon
Merge pull request #6 from SanishThomas/master

Bullet polygon
Merge branch 'master' of github.com:mrmoses/thunder-tanks
updated Sanish's bullet polygon collision implementation (reverted some stuff)
added Line entity (for debugging stuff)
fixed using Block lenght/height
removed get_collision_circle from Poly
created Bullet moveForward event
updated Bullet aabb collision to also detect Poly collission, a updated richochet to work on angled surfaces (Poly)
updated to 60 FPS
fixed Bullet skipping edge-to-edge collisions
added black border to Blocks
added map boundary walls
set Classic as the default map
Merge branch 'master' into heroku
updated date in appcache
Merge branch 'master' into heroku