title: Bind to UIBarButtonItem events in MvvmCross
body: <p>What's the proper way with <code>MvvmCross</code> to create a binding from an <code>UIBarButtonItem</code> to a <code>MvxCommand</code> ?</p>
  
  <p>This does not work for me -></p>
  
  <pre><code>public override void ViewDidLoad ()
  {
      base.ViewDidLoad ();
      this.AddBindings (new Dictionary&lt;object, string&gt; (){
         {MyButton, "{'Clicked':{'Path':'MyCommand'}}"}
      });
  }
  </code></pre>
  
  <p>I don't get any error in the console. I can work around by avoiding bindings, but you know, it'd look best if all was bound.</p>