Asynchronous switch functions (Make sure the DOM is parsed after switching) (#79)

* Make sure the DOM is parsed after switching

* Fix reload-link in the example

example/page2.html

@@ -9,7 +9,7 @@
   <body>
     <div class='body'>
       <h1>Page 2</h1>
-      Hello. Go to <a href='index.html'>Index</a>.
+      Hello. Go to <a href='index.html' class="js-Pjax">Index</a>.
     </div>
   </body>
 </html>