Add github icon

Signed-off-by: Yen-Chin Lee <[email protected]>

Author: coldnew

resources/templates/themes/clojuretw/html/base.html

@@ -36,6 +36,7 @@
                 </li>
                 {% endfor %}
                 <li><a href="{{rss-uri}}">RSS</a></li>
+                <li><a href="https://github.com/clojure-tw/weekly"> <i class="fa fa-github fa-lg" aria-hidden="true"></i></a></li>
             </ul>
         </div><!--/.nav-collapse -->
     </div><!--/.container-fluid -->