Angularified the UI. Mongo for data persistence.

Pretty horrible code. Abuse of rootScope etc.

It's my birthday so I don't care.
Fixing 'enter' bug
Fixing bugs with snake length and dismiss button
Prevent scrolling with up and down
Ooops, broke keypresses
Limit high scores
Merge pull request #2 from richardTowers/master

Merge in today's changes.