Use stringByAppendingFormat: instead of multiple stringByAppendingString: messages
Add class method factory methods to initialise NTSComic objects
Revamp NTSComicStore to keep comics in memory, prevent having to initialise objects (slowly) from files every time
Use -[NTSComic comicWithJSONDictionary:] inside of the alloc/init dance that gives me an itch in my side ;p
Modify the tiles view controller to work with NTSComicStore's changes