Added link to www2.sane-project.org.

index.html

@@ -113,6 +113,13 @@
     </table>
 
     <hr>
+
+    <p>
+      If the main SANE website (http://www.sane-project.org) is not available or
+      slow, please use our mirror: <a
+      href="http://www2.sane-project.org">http://www2.sane-project.org</a>.
+    </p>
+
     <p>
       Thanks to the <a href="http://www.debian.org" target="_top">Debian Project</a> for providing
       the <a href="http://alioth.debian.org" target="_top">Alioth</a> GForge service.