Update 4/26/14 - Please read description

- Able to generate terrain now (in the GUI, not yet the model)!
- Test button on main menu takes us to directly to BattleScreen with
preset team builds and terrain settings (see MainMenuScreen code for
specifics). Btw, button is ghosted in main menu picture.
- Implemented minimum available points and size in order to play game.
- You can click quit button on BattleScreen to take you back to main
menu!
- Newer artwork (all original!). Not priority, but needed to goof off
for awhile.