text: //
  //  UINavigationBar+RWWebProgress.h
  //  Demo
  //
  //  Created by 许宗城 on 16/7/1.
  //  Copyright © 2016年 许宗城. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  #import "RWWebProgressView.h"
  
  @interface UINavigationBar (RWWebProgress)
  
  @property (nonatomic, weak, readonly) RWWebProgressView *rw_webProgressView;
  
  @end
  