Create README.md
remember markdown this time. remember github has a preview button as well.
Save and Load functionality so we don't lose maps in a refresh. Lots of tweaks in service of this feature.
automatic save and load, refactor UI to be hide-able and have the option of starting a new map
hexordinates can now be added together (immutable)
Hexordinate knows how to calculate other tile group adjacencies
New strategies for loading and newing a game map: attempt to load, fail over to new. New uses a portal group tile to start.
Move to adding tile groups instead of tiles. Manage a stack of tile groups to pull from.
Set dimensions to fit my table, trigger calls to the new tile group adding.
Convert constructor to take an options hash for injection. Store a listing of all tiles packed with the real game.
Ack, the html and tests for the last few commits (i wrote them first i swear)
Refactor the tile library to create Tile objects on demand instead of at load time.
Make TileStack into a class that knows how to serialize itself, now TerrainMesh stores its TileStack easily.
Calculate revealed group tiles in a more robust way, notify after finished adding a group tile, make the group hints easier to use.
be a little smarter about when meshes notify during group adds

closes #1
closes #2
closes #3
tweak the html for dev and demo