First take on a Core Data model schema. See README.md update for details.
Removes CamelBacking from the entity and relationship names, because it confuses helios, which I’m trying to use to generate the backend from the xc data model.
Oops, forgot one CamelBack.
Removes explicit id attributes for entities and renames the Item’s unique ID to a content ID.
Adds AFIncrementalStore via CocoaPods.
On second thought, I think I’ll play with StackMob, instead of trying to pair AFIncrementalStore with Helios+Heroku.