text: //
  //  AppDelegate.h
  //  arc
  //
  //  Created by Yong Michael on 19/3/13.
  //  Copyright (c) 2013 nus.cs3217. All rights reserved.
  //
  
  @interface AppDelegate : UIResponder <UIApplicationDelegate>
  
  @property (strong, nonatomic) UIWindow *window;
  
  @property (readonly, strong, nonatomic) NSManagedObjectContext *managedObjectContext;
  @property (readonly, strong, nonatomic) NSManagedObjectModel *managedObjectModel;
  @property (readonly, strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;
  
  - (void)saveContext;
  - (NSURL *)applicationDocumentsDirectory;
  
  @end
  