merging with brian's changes
Merge branch 'master' of github.com:mcoombs32/edu.ycp.cs481.YCPGames
Added app icons
Merge branches 'TicTacToe_Backend' and 'master' of github.com:mcoombs32/edu.ycp.cs481.YCPGames into TicTacToe_Backend
Buttons now update their images based on input.