title: Adding a UIImageView as a subview of UILabel, image not appearing
body: <p>So, when I do this with a regular old view:</p>
  
  <pre><code>UIView *topBlock = [[UIView alloc] initWithFrame:CGRectMake(0,-frameSize.height, frameSize.width, frameSize.height/2)];
  [viewController.view addSubview:topBlock];
  topBlock.autoresizesSubviews = NO;
  topBlock.clipsToBounds = YES;
  UIImage *topImage = [UIImage imageNamed:@"BloktLayout"];
  UIImageView *topImageView = [[UIImageView alloc] initWithImage:topImage];
  topImageView.frame = viewController.view.frame;
  [topBlock addSubview:topImageView];
  </code></pre>
  
  <p>I get the nice old image where I want it, in the top view. But the middle view is a UILabel, and when I try the same thing:</p>
  
  <pre><code>UILabel *midBar = [[UILabel alloc] initWithFrame:CGRectMake(midBarOrigin.x, midBarOrigin.y, midBarWidth, midBarHeight)];
  midBar.text = @"Blokt";
  midBar.textColor = [UIColor blackColor];
  midBar.textAlignment = NSTextAlignmentRight;
  midBar.font = [UIFont fontWithName:@"HelveticaNeue-UltraLight" size:80.0f];
  [viewController.view addSubview:midBar];
  midBar.autoresizesSubviews = NO;
  midBar.clipsToBounds = YES;
  UIImage *midImage = [UIImage imageNamed:@"BloktLayout"];
  UIImageView *midImageView = [[UIImageView alloc] initWithImage:midImage];
  midImageView.frame = viewController.view.frame;
  [midBar addSubview:midImageView];
  </code></pre>
  
  <p>I don't see any image at all in the UILabel. Any help?</p>