title: Remove everything before "http://..." in string
body: <p>I have a txt with line like these ones:</p>
  
  <pre><code>155The Last Goodnight - Stay Beautiful by CapitolMusic  http://www.youtube.com/watch?v=H5c2iTcSlbE
  156Sara Evans - A Real Fine Place To Start by saraevansVEVO http://www.youtube.com/watch?v=IrdCBkXB91I
  157Simple Minds - See The Lights by SimpleMindsVEVO http://www.youtube.com/watch?v=MmKTMAak710
  </code></pre>
  
  <p>I want to remove everything before "http://..." in order to reach this result:</p>
  
  <pre><code>http://www.youtube.com/watch?v=H5c2iTcSlbE
  http://www.youtube.com/watch?v=IrdCBkXB91I
  http://www.youtube.com/watch?v=MmKTMAak710
  </code></pre>
  
  <p>Can you help me?</p>