title: using angularjs directive for icheck plugin
body: <p>I've a problem with my Angularjs app, cannot figure out where is the problem.</p>
  
  <p>check it on plunker <a href="http://plnkr.co/edit/gZorJLzwVjk1akLknaPu?p=preview" rel="nofollow">Here</a></p>
  
  <p>when I click the button it should run the iCheck() plugin, but it doesn't</p>