Fix client-side updates on example

The Set client-side script was not being referenced correctly
for the deployment server.

views/posts-client-side-updates.html

@@ -16,7 +16,7 @@
     <script type='text/javascript' src='js/superagent.js'></script>
 
     <!-- Set engine -->
-  	<script src="/set.js"></script>
+  	<script src="set.js"></script>
 
   	<script type='text/javascript'>