title: Unwanted line on tab bar on iPhone 6
body: <p>Under iOS 8.1 a 1px line is showing on my tab bar. This problem is only present on iPhone 6. Here's <a href="https://stackoverflow.com/questions/18785930/an-unwanted-line-on-tab-bar-controller-under-ios7">another post</a> with the same problem. Here is a screenshot of my tab bar.</p>
  
  <p><img src="https://i.stack.imgur.com/3RFPP.jpg" alt="enter image description here"></p>
  
  <p>I am using this code in Swift for my tab bar.</p>
  
  <pre><code>tabBarController?.tabBar.backgroundImage = UIImage(named: "tabbar_shadow.png")
  tabBarController?.tabBar.backgroundColor = UIColor.clearColor()
  tabBarController?.tabBar.shadowImage = UIImage()
  tabBarController?.tabBar.translucent = true
  </code></pre>
  
  <p>This is working fine but a 1px line is showing up above the tab bar on iPhone 6.</p>