title: can we attach click handlers to custom child components
body: <p>I was trying to add a click handler to my own child component. In react chrome extension I was able to see the click handler as well.</p>
  
  <p>But the click itself didn't work - wondering what did I miss.</p>
  
  <p>Sample Code:</p>
  
  <pre><code>... 
  render (
    &lt;MySampleComponent onClick={this.handler} /&gt;
  );
  ...
  </code></pre>