Added update methods for User, removed shell header

Re-added check for straight_flush
Some temporary stuff and comments (read the comments, and the next
commit should delete the ones with my name. That may quite possibly be
me, since I am still working offline.)
Should be CamelCase, not camelCase, according to our code and Ruby convention, iirc

Also snake_cased numPlayers into num_players
Removed @num_player variable
Merge branch 'master' of github.com:bitpoker/bitpoker into beta