text: //
  //  NSData+Networking.h
  //  BMNetworking
  //
  //  Created by fenglh on 2017/1/20.
  //  Copyright © 2017年 BlueMoon. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSData (Networking)
  /**
   Returns a lowercase NSString for md5 hash.
   */
  - (NSString *)md5String;
  
  @end
  