title: ScrollSpy "Activate" event does not trigger
body: <p>I read this question: <a href="https://stackoverflow.com/questions/9343715/how-to-use-twitter-bootstrap-scrollspy-to-execute-a-function">How to use Twitter Bootstrap ScrollSpy to execute a function</a>, that said to first grab the event, then to add a certain function. First, I'm relatively new to jQuery, so I don't know how to grab an event.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>$(".navbar").scrollspy();
  $('[data-spy="scroll"]').each(function()
  {
      $(this).scrollspy('refresh');
  });
  $("ul.nav li").on("activate", function()
  {
      console.log("ACTIVATED");
  });
  </code></pre>
  
  <p>Triggering it manually runs the function, of course, but whatever I try to do, it doesn't seem to work.</p>
  
  <p>Any ideas?</p>