title: Adding UIRefreshControl to UIScrollView
body: <p>I'm just trying to simply add a UIRefreshControl to a UIScrollview- for some reason when I pull down on the scroller, nothing happens at all. No ActivityView, no action. It just bounces back up like nothing happened.</p>
  
  <p>this is what I have so far:</p>
  
  <pre><code>- (void)viewDidLoad {
  [super viewDidLoad];
  
  [scroller setAutoresizesSubviews:YES];
  
  UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
  [refreshControl addTarget:self action:@selector(handleRefresh:) forControlEvents:UIControlEventValueChanged];
  [self.scroller addSubview:refreshControl];
  
  //populate the scroller with data
  [self grabData];
  
  }
  
  -(void)handleRefresh:(UIRefreshControl *)refresh {
  // Reload my data
  [self grabData];
  }
  </code></pre>