title: AVAssetResourceLoaderDelegate and HLS does not work?
body: <p>For me it's not working with "m3u8" url both on Simulator and real device (iPhone 5S).
  In the same time, Apple demo working good, but I don't see any difference.
  And with other url extensions it's ok (e.g., "m3u9" on the end of the url)</p>
  
  <pre><code>import UIKit
  import AVKit
  import AVFoundation
  
  class ViewController: UIViewController, AVAssetResourceLoaderDelegate {
  
      override func viewDidLoad() {
          super.viewDidLoad()
  
          // if I change m3u8 to different file extension, it's working good
          let url = NSURL(string: "cplp://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8") 
  
          let asset = AVURLAsset(URL: url!, options: nil)
          asset.resourceLoader.setDelegate(self, queue: dispatch_queue_create("AVARLDelegateDemo loader", nil))
  
          let item = AVPlayerItem(asset: asset)
          let player = AVPlayer(playerItem: item)
          player.play()
      }
  
      func resourceLoader(resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequestedResource loadingRequest: AVAssetResourceLoadingRequest) -&gt; Bool {
  
          NSLog("This method is never called in case of m3u8 url")
  
          return true
      }
  }
  </code></pre>