Fixes checkmate, adds draft of user functionality, improves Board::render
Changes how board is displayed to reflect which pieces are which colors.
Makes working game. Code reviewed, not refactored yet.
Moves all classes into different files. Require other files as necessary.
Refactors two element position arrays in board class, simplifies board setup, streamlines slidingPiece#moves
Finishes initial refactoring. Game seems playable.
Improves board#render. Working, more user friendly version of game