Update copyright date per harvesthq#1397

tjschuck · tjschuck · commit 85c5739e1e08 · 2013-07-24T17:24:21.000-04:00
diff --git a/public/options.html b/public/options.html
@@ -200,7 +200,7 @@ <h3>Example:</h3>
       </table>
 
       <footer>
-        &copy; 2011 <a href="http://www.getharvest.com/">Harvest</a> &mdash; Chosen is licensed under the <a href="https://github.com/harvesthq/chosen/blob/master/LICENSE.md">MIT license</a>.
+        &copy; 2011&ndash;2013 <a href="http://www.getharvest.com/">Harvest</a>. Chosen is licensed under the <a href="https://github.com/harvesthq/chosen/blob/master/LICENSE.md">MIT license</a>.
       </footer>
 
     </div>
