More reliable strategy for getting deepmost component + addition of refresh() method + example & documentation on asynchronous updates

examples/index.html

@@ -11,6 +11,7 @@
     <li><a href="basic-render">Basic Render</a></li>
     <li><a href="vue-router">Usage with vue-router</a></li>
     <li><a href="vuex">Usage with vuex</a></li>
+    <li><a href="vuex-async">Usage with vuex + async actions</a></li>
   </ul>
 </body>
 </html>