Reorganization of presentation/column code. Working column pagination. Working column navigation.
Added a 'presented' event to control order of presentation after ready
Make all presentation happen after ready.
Update the README with a bit more info
Update the readme with a bit more info
Fixed a problem with CFIs that have no length
Make BookKit.CFI more modular, more independent. Added tests.

Will do this with the rest of BookKit, slowly.