Automatically pickup links to `Batman.#{ClassName}`

Accomplished by a [big ol' RegExp](https://github.com/batmanjs/batmanjs.github.io/pull/39/files#diff-679b230fd1c3c2480a21e0a5beb68c48R16). 

Also, tracking the pages that were generated so that:
- doesn't link to pages that don't exist
- warns when it find a class name with no documentation (my to-do list :)