updated rules

app/templates/rules.html

@@ -28,6 +28,7 @@
       <li>Attacking personnel, including participants and non-participants, or the competition system itself is forbidden.</li>
       <li>Every participant has to follow the Code of Conduct.</li>
       <li>The top three teams of the competition are eligible for the placement prizes listed on the front page.</li>
+      <li>To claim a prize, your team has to be present at the prize ceremony and followed the rules.</li>
       <li>The organizers have the final say on prize decisions. Legal recourse is not permitted.
       <li>Unless stated otherwise the flag format is <code>h4tum{.+}</code>.</li>
       <li>By entering in the competition you accept these rules.</li>