Added gitignore.
Added code for the new implicit choice system with some other minor modifications. Need to push this through to the API documentation and to the tutorial game now. There is a test version of the tutorial game, but it is just hacked as a test bed, need a better walkthrough of its capabilities.
Split documentation down into smaller pieces.
Moved doc output into its own directory.
Changed top level documentation link.
Changed reference to old API root file in readme.
Reworked the Undum tutorial into sections.
Added new doc files to upload.