changed lazer speed, fixed laser dissappearing when invader is dead
Merge branch 'master' into game_controller

Conflicts:
	laser.js
changed laser speed to 4
Merge branch 'master' into game_controller
Merge branch 'master' into game_controller
Fixed keypresses
Merge branch 'master' into game_controller
Merge branch 'master' into game_controller

Conflicts:
	controller.js
Merge pull request #17 from jeffkynaston/styling

Styling
Implimented scoring, fixed bullets
Merge branch 'master' into game_controller

Conflicts:
	controller.js
Merge pull request #18 from jeffkynaston/game_controller

Game controller
fix music to make it loop