title: Doble Click Button event in xcode
body: <p>I want to open a web browser i.e Google page on clicking a button.
  I am successfully getting this done on single click. But the same thing i want to achieve on double click of event.
  I searched a lot about this and got a program that opens on clicking anywhere on the  screen.
  please guide me if anyone has any kinda knowledge about this.</p>
  
  <p>Thanks in advance</p>