title: Add Facebook Shimmer on multiple UIViews
body: <p>I am trying to add Facebook Shimmer on UICollectionViewCell which has multiple UIViews. </p>
  
  <p>For <strong>one UIView</strong>, it's working fine with below code: </p>
  
  <pre><code>let shimmeringView = FBShimmeringView(frame: imageView.frame)
  shimmeringView.contentView = imageView
  backgroundView.addSubview(shimmeringView)
  shimmeringView.isShimmering = true
  </code></pre>
  
  <p>Where <code>backgroundView</code> is the view in which I have all the subviews such as <code>imageView</code>, <code>labelView</code> and others.</p>
  
  <p>While I am trying to add multiple views then first view is getting correct frame but other views' widths are becoming zero. I'm adding this code inside <code>collectionView(_:cellForItemAt:)</code>.</p>
  
  <pre><code>let shimmeringView = FBShimmeringView(frame: imageView.frame)
  shimmeringView.contentView = imageView
  backgroundView.addSubview(shimmeringView)
  shimmeringView.isShimmering = true
  
  let shimmeringView = FBShimmeringView(frame: labelView.frame)
  shimmeringView.contentView = labelView
  backgroundView.addSubview(shimmeringView)
  shimmeringView.isShimmering = true
  </code></pre>
  
  <p>Can anyone tell me if it's the <strong>correct way to implement Facebook Shimmer for multiple <code>UIView</code>s</strong> or Where I am doing it wrong?</p>