Add Stack overflow "duktape" tag ref to website

website/index/index.html

@@ -34,8 +34,9 @@ functions from C code and vice versa.</p>
 
 <p>Support:</p>
 <ul>
-<li><a href="https://github.com/svaarala/duktape/issues">GitHub issues</a></li>
-<li>IRC: <code>#duktape</code> on <code>chat.freenode.net</code> (<a href="https://webchat.freenode.net/">webchat</a>)</li>
+<li>User community Q&amp;A: Stack Overflow <a href="http://stackoverflow.com/questions/tagged/duktape">duktape</a> tag</li>
+<li>Bugs and feature requests: <a href="https://github.com/svaarala/duktape/issues">GitHub issues</a></li>
+<li>General discussion: IRC <code>#duktape</code> on <code>chat.freenode.net</code> (<a href="https://webchat.freenode.net/">webchat</a>)</li>
 </ul>
 </div>  <!-- front-blurp -->