Added usage example of successor function.
Updated EightPuzzle mainly via introduction of a simpler print method,
which makes implementation of A* easier.
Merge pull request #2 from AndrewHynes/master

Added simpler print method to EightPuzzle.
Changed names and comments to be more accurate.

Removed search- or exercise-related parts.
Fixing randomisation on leJOS.
Fixing randomisation on leJOS. This fixes #3.
Merge branch 'master' of https://github.com/hawesie/rp-search