Merge pull request #1 from sbastn/master

Welcome screen
Adding game state using machina - currently untested - and likely not working!
Merge branch 'master' of github.com:leftlogic/headshots
Styled player-a pov, game state starting to work

Current issues: game state doesn't allow refreshes
+underscore in package
relative pos for scene to position ball correctly
Updating the floor and mountains