README file for SquarePuzzle demos.
(C)2001 by Tom Hayes, written for CSPP 535 course.

Usage: java SquarePuzzle
   or: java SquarePuzzleApp

SquarePuzzle is the back-end class, which implements a sliding tile
puzzle.  It is runnable, and has a simple text-based interface.

SquarePuzzleApp is a GUI front-end to SquarePuzzle.  

Stage1: Implementation of the back-end class.
Stage2: A quickly implemented GUI interface, which follows
the Presentation/Translation/Application paradigm, and
shows off the bare bones of a GUI implementation.
Stage3: Starts with a critique of the Stage2 GUI.  Will have some
improvements later.