Update index.html.mustache

Add Hogan to the homepage so people can play with it in the console.

web/index.html.mustache

@@ -11,6 +11,7 @@
 	<title>Hogan.js</title>
 	<meta name="description" content="">
 	<meta name="author" content="">
+	<script src="http://twitter.github.com/hogan.js/builds/{{version}}/hogan-{{version}}.js"></script>
 	<!--[if lt IE 9]>
 		<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
 	<![endif]-->