First stab at nsmanagedobject subclasses for the CD entities.
Model tweaks to properly link the NSManagedObject subclasses to the entity model.
Fixes path to entity model and sets the sqlite3 store type (wtf was xml the default?)
Adds a very crude implementation of a model service protocol to persist new items associated with a characteristic for their URLs.
Much much cleaner resource model code, which imo is a lot more idiomatically swift (swiftian?)
Xcode 6b3 Swift syntax updates.