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

Code/Network/RKParamsAttachment.m

@@ -27,7 +27,7 @@ extern NSString* const kRKStringBoundary;
 - (id)initWithName:(NSString*)name {
 	if ((self = [self init])) {
         self.name = name;
-        self.fileName = @"";
+        self.fileName = name;
 	}
 	
 	return self;