Add new activities

Signed-off-by: Willy Sudiarto Raharjo <willysr@gmail.com>

about.php

@@ -174,6 +174,7 @@ include "includes/navbar.html";
     <li>Head of the UKDW Procurement Division (2012-current).</li>
     <li>Head of <a href="http://training.ukdw.ac.id/">Duta Wacana Training Center</a> (2012-current).</li>
     <li>UKDW YKFS (Yogyakarta Kampung Field School) V Coordinator and Supervisors (2013).</li>
+    <li>Co-Author of MSB (MATE SlackBuilds Project) (2013-current)</li>
     <li>SBo (SlackBuilds Project) Admins (2013-current)</li>
   </ol>
 </article>