Add license to navbar

Author: styfle

docs/index.html

@@ -169,7 +169,7 @@ <h1>Marked.js Documentation</h1>
                     <li><a href="#/CODE_OF_CONDUCT.md">Code of Conduct</a></li>
                     <li><a href="#/AUTHORS.md">Authors</a></li>
                     <li><a href="#/PUBLISHING.md">Publishing</a></li>
-
+                    <li><a href="#/LICENSE.md">License</a></li>
                 </ul>
             </nav>
             <div id="content"></div>