Implementation of Object Mapping 2.0 design:

* Removed RestKit from inheritance hierarchy
  * Mappings are implemented as concrete classes
  * Mapper is much more flexible & powerful
  * Much more robust error handling
  * Serialization is reimplemented as an object mapping operation
  * Added ability to serialize to JSON natively
  * Reworked Core Data integration
  * Simplified the codebase substantially

Examples/RKDiscussionBoardExample/DiscussionBoard/Code/Models/DBTopic.m

@@ -16,20 +16,6 @@
 
 #pragma mark RKObjectMappable methods
 
-/**
- * The property mapping dictionary. This method declares how elements in the JSON
- * are mapped to properties on the object.
- */
-+ (NSDictionary*)elementToPropertyMappings {
-	return [NSDictionary dictionaryWithKeysAndObjects:
-					@"id", @"topicID",
-					@"name", @"name",
-					@"user_id", @"userID",
-					@"created_at", @"createdAt",
-					@"updated_at", @"updatedAt",
-					nil];
-}
-
 /**
  * Informs RestKit which properties contain the primary key values that
  * can be used to hydrate relationships to other objects. This hint enables