title: Detect Link or URL in ASTextNode AsyncDisplayKit
body: <p>I been trying to use <code>AsyncDisplayKit</code> framework , I have an requirement to detect url's in text.</p>
  
  <p>I have used <code>ASTextNode</code> but couldn't find any api to detect links.</p>
  
  <p>I read that there is property <code>linkAttributeNames</code> used for url detection but unable to find any example how to do it.</p>
  
  <p>Could someone help me how to use the above class?</p>
  
  <p>thanks</p>