improved the sheild working on the ship

need to make the cannons in the right spot on the ship always. and not have bullets collide witht the ship when they first get spawned. Also the cannons need to have a max angle to turn before they cant hit the player
cannons have a max turn radius
minify gamejs for gh-pages
Merge branch 'gh-pages' of github.com:powerc9000/bullet-dodge2 into gh-pages