Added twitter name.

app/views/init/index.html.erb

@@ -9,7 +9,7 @@
   <footer class="footer">
 <!--      <p class="pull-right">Powered by <a href="" target="_blank">xxx</a></p>-->
       <p class="pull-right"><a href="javascript:window.scrollTo(0,0);">Back to top</a></p>
-      <p>Designed and built with all the love in the world <a href="http://twitter.com/xxx">@xxx</a></p>
+      <p>Designed and built with all the love in the world <a href="http://twitter.com/zammad_org">@zammad_org</a></p>
   </footer>
 </div>