title: How to add a hyperlink button on iOS Swift?
body: <p>I'm trying to make a clickable link over a button.
  I made this using some Internet help but it didn't work :</p>
  
  <pre><code>    @IBAction func linkClicked(sender: AnyObject) {
      openUrl("http://fr.envisite.net/t5exce")
  }
  func openUrl(url:String!) {
  
      let targetURL=NSURL(fileURLWithPath: url)
  
      let application=UIApplication.sharedApplication()
  
      application.openURL(targetURL);
  
  }
  </code></pre>
  
  <p>It doesn't do anything, no error, just the button doesn't get me on Safari (I use the iOS simulator)</p>