Merge pull request #20 from NickStefan/mainjs

Add file structure, coquette, and box2d.js
Use echo to log into firebase in .travis.yml
Merge pull request #21 from johnheroy/master

Use echo to log into firebase in .travis.yml
Basic join game screen
Merge pull request #22 from concreted/joingame

Basic join game screen
Interpolated strings in firebase deploy
only deploy if not a PR
Merge pull request #23 from johnheroy/master

Update .travis.yml for firebase deployment
Fix syntax in .travis.yml
Merge pull request #24 from johnheroy/master

Fix syntax in .travis.yml
Add game canvas, falling sand, line catcher