Merge pull request #6 from aweidner/master

Multi floor navigation is complete
Merge pull request #7 from aweidner/master

A rough sketch of what attacking might look like is now implemented.
testing first commit
testing first commit
Added interface for starting a game, viewing help, and about
Merge pull request #8 from tdschenk/master

Added a simple swing interface for a startup screen, joining games, and viewing help/about windows.