text: //
  //  ViewController.h
  //  FirebaseExample
  //
  //  Created by Zhenbang Xiao on 07/10/2015.
  //  Copyright © 2015 Zhenbang Xiao. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface ViewController : UIViewController
  
  @property (weak, nonatomic) IBOutlet UITextField *messageField;
  
  @end
  
  