Added upgrade for 2.1.1 and updated version.
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index ab5a70c..da47b5a 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2006 - 2011, EllisLab, Inc.
+ * @copyright	Copyright (c) 2006 - 2012, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0