Do NOT use this branch to play the game: Game does not run!

Stubbed out first skeleton of how the main menu system will be working.
However, need to take a step back and set up all the main menu graphics
properly before further work can be done on the code side.
Got the menu drawing and sizing properly. No functionality: Cannot enter
game yet at this state.
Working implementation of a bare-bones menu system! One can selected a
level, die or finish, and go back to the main menu and select another.

System should probably be tested later for memory leaks, just to confirm
there aren't any.

Still need to place the text next to the buttons and make more of them
work.
Added text to buttons; not same font as original but at least they are
labeled.

Fixed off-by-one-pixel-column for rollover image for exit door.

Fixed rollover images so all three are now used properly.

Exit button now quits the game.
Updated .jar.

Removed all status information from readme, since I am now transitioning
to using native issue tracking systems.

Together with the past commit, Fixes #1