Merge pull request #3 from artfoundry/firebase

Firebase
Fixed issues with physics.
Added "physicsChecker" function that shows physics bodies outline when
?checkPhysics is in the URL.
Merge branch 'master' of https://github.com/artfoundry/tank

Conflicts:
	app/src/main.js
adding send and get methods to tank-fb.js and setting up send method in Tank.js; need to set up get method in Tank.js