text: //
  //  FactBook.h
  //  BuildaSimpleiPhoneApp
  //
  //  Created by Jian Su on 2015-09-03.
  //  Copyright (c) 2015 Jian Su. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface FactBook : NSObject
  
  @property (strong, nonatomic) NSArray *facts;
  - (NSString *)randomFact;
  
  @end
  