Changed style of the list of requires, and added a line for importing
a shared library located at ./lib, and referred to by app.lib.
Moved some stuff around and added explicit return.
Added link for joining an existing game.
Added a new shared lib located at ./lib, and referred to by app.lib.
Added a ./lib/index.js file for defining all of the lower level objects
in the lib, and a poker.js file, for a basic poker lib.
Renamed buildGame to startGame