Trigger jquery events on open and close

[tylerball]

This would allow for code to be executed on open and close of the drawer.

[blivesta]

Great Thanks! @tylerball
But seems there is a bug in transitionEnd function.
If it like the following have multiple objects come back.

$('.drawer').on('drawer.opened',function(){
  console.log('opened');
});

transitionEnd function is looks good this code

$.fn.transitionEnd = function(callback){
  var end = "transitionend webkitTransitionEnd mozTransitionEnd oTransitionEnd MSTransitionEnd";
  return this.each(function() {
    $(this).bind(end, function(){
      $(this).unbind(end);
      return callback.call(this);
    });
  });
};