Eliminated the use of the ActiveRecord pattern across the library.

Code/CoreData/NSManagedObject+RKAdditions.m

@@ -8,6 +8,9 @@
 
 #import "NSManagedObject+RKAdditions.h"
 #import "NSManagedObjectContext+RKAdditions.h"
+#import "RKLog.h"
+#import "RKManagedObjectStore.h"
+#import "NSEntityDescription+RKAdditions.h"
 
 @implementation NSManagedObject (RKAdditions)
 
@@ -22,4 +25,10 @@
     return (managedObjectClone == nil) ? YES : NO;
 }
 
+- (BOOL)isNew
+{
+    NSDictionary *vals = [self committedValuesForKeys:nil];
+    return [vals count] == 0;
+}
+
 @end