Merge pull request #16 from Eye-Static/andy

refactored main game logic into new file
WE GOT LETTERS ON THE BOARD
Merge pull request #17 from Eye-Static/zach

WE GOT LETTERS ON THE BOARD
start adding socket.io stuff, try to improve tray letter ui but fail
Merge branch 'master' into andy
start basic multiplayer functionality
finally add user stories in