title: Init function for bootbox to use some code after showing dialog
body: <p>I want to display a textarea-element with bootbox. This textarea should be used with a WYSIWYG-editor, which will be initialized by</p>
  
  <pre><code>$('#editor').redactor();
  </code></pre>
  
  <p>So I want to add this in the moment the textarea is displayed. I tried this:</p>
  
  <pre><code>bootbox.dialog({
      title: "Title",
      message: '&lt;textarea id="editor"&gt;&lt;/textarea&gt;',
      init: function () {
          $('#editor').redactor();
      }
  });
  </code></pre>
  
  <p>But this seems to be wrong.</p>