gistfile1.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    
    [[NSNotificationCenter defaultCenter] addObserverForName:SISPersistentStoreNotifications.didImportUbiquitousContentChanges object:nil queue:nil usingBlock:^(NSNotification *note) {
        CMKUbiquitousChange *change = [note.userInfo objectForKey:@"ubiquitousChange"];
        
        NSArray *insertedObjectIDs = change.insertedObjectIDs;
        
        NSMutableArray *insertedObjects = [NSMutableArray array];
        
        for(NSManagedObjectID *objectID in insertedObjectIDs)
        {
            NSManagedObject *object = [self.managedObjectContext objectWithID:objectID];
            if(object == nil)
            {
                continue;
            }
            [insertedObjects addObject:object];
        }
        
        NSDictionary *userInfo = @{NSInsertedObjectsKey : insertedObjects};
        NSNotification *didSaveNotification = [NSNotification notificationWithName:NSManagedObjectContextDidSaveNotification object:self userInfo:userInfo];
        
        [self.managedObjectContext performBlock:^{
            [self.managedObjectContext mergeChangesFromContextDidSaveNotification:didSaveNotification];
        }];

    }];
	// Do any additional setup after loading the view, typically from a nib.
    self.navigationItem.leftBarButtonItem = self.editButtonItem;

    UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(insertNewObject:)];
    self.navigationItem.rightBarButtonItem = addButton;
}