Add Game Statistics

[ericpalyan]

~depends #8 What is a game without keeping score? Enhance the game by keeping track of statistics such as each player's: wins, losses, money made/lost, etc. and displaying the updated stats at the end of each round.

~estimated 200

[JaredBJensen]

Done. The game now keeps track of a player's wins, losses, money won and money lost and displays these stats below their money.