Mention that converse.js runs in the browser :)

index.html

@@ -77,7 +77,7 @@
                 <div class="row">
                     <div class="col-md-8 col-md-offset-2">
                         <h1 class="brand-heading"><i class="icon-conversejs"></i>Converse.js</h1>
-                        <p class="intro-text">A free and open-source XMPP chat client</p>
+                        <p class="intro-text">A free and open-source XMPP chat client in your browser</p>
                         <div class="page-scroll">
                             <a href="#about" class="btn btn-default btn-lg"><span class="btn-text">Learn More</span></a>
                         </div>