added acceptance clause

app/templates/rules.html

@@ -22,6 +22,7 @@
       <li>The top three teams of the competition are eligible for the placement prizes listed on the front page</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>
     </ul>
     <hr style="border-color: #333; margin: 30px 0;"></hr>
     <h1>> Code of Conduct</h1>