Add link from demo to repo

Author: kswedberg

demo/index.html

@@ -87,6 +87,7 @@
   <div class="container">
     <div class="intro">
       <h1>jQuery smoothScroll Demo</h1>
+      <p>View <a href="https://github.com/kswedberg/jquery-smooth-scroll">GitHub Repo</a></p>
       <p>Try it with <a href="bbq.html">jQuery BBQ hashchange support</a> or <a href="hashchange.html">native hashchange support (IE9+)</a></p>
       <p>Scroll the Document to one of the following paragraphs:</p>
     </div>