New mailing list.

README

@@ -79,7 +79,8 @@ the http-headers "Modified" and "Expires".
 
 Online presence
 
-* The cgit homepage is hosted by cgit at http://git.zx2c4.com/cgit/about
+* The cgit homepage is hosted by cgit at <http://git.zx2c4.com/cgit/about>
 
 * Patches, bugreports, discussions and support should go to the cgit
-  mailing list: cgit@hjemli.net
+  mailing list: <cgit@lists.zx2c4.com>. To sign up, visit 
+  <http://lists.zx2c4.com/mailman/listinfo/cgit>