Get Othello Working

[nchnsn]

Get Othello working no matter what means possible. Focus on ES5 and vanilla javascript if possible.

• [x] Game Mechanics - Player turns, flipping pieces, changing colors all works consistent to standard Reversi rules.

• [x] Working Scoreboard - Accurately tracks player moves, keeps score, and allows you to undo the last move.

• [x] Clear UI - It's intuitive to players how the game works, how to move pieces, and accurately reflects the experience of playing Othello/Reversi.

[nchnsn]

Just pushed the working version that meets these requirements. Closing and moving onto the refactor.