Too procedural!

[xtoddx]

Fix the implementation of the Poker object to follow a better object-oriented paradigm. Right now a name map, the deck, and the generation of a hand of cards are all in the same method, which keeps us from testing components in isolation.

We assume we're playing 5 card stud, but we may want to play hold-em down the line, so see if we can map that onto the domain. I think there may be games (Canasta?) that use different decks, or a set of 2?