title: IconMenu doesn't appear in material-ui
body: <p>I'm using <a href="http://material-ui.com/" rel="nofollow">material-ui</a>. I tried to implement <a href="http://material-ui.com/#/components/icon-menus" rel="nofollow">Icon Menu</a>. My component:</p>
  
  <pre><code>import React from 'react';
  import {IconMenu} from 'material-ui';
  import MenuItem from 'material-ui/lib/menus/menu-item';
  
  export default React.createClass({
    render() {
      return (
        &lt;IconMenu
          iconButtonElement={&lt;div&gt;Tried IconButton instead if this div here&lt;/div&gt;}
          &gt;
          &lt;MenuItem primaryText='Logout' /&gt;
        &lt;/IconMenu&gt;
      )
    }
  });
  </code></pre>
  
  <p>When I click on icon button element (div with text in this case) nothing happens. What an I doing wrong?</p>