Update copyright year.

2012-02-19 13:35:09 -08:00 · 2012-02-19 13:35:09 -08:00 · 67833444a9
--- a/2
+++ b/2
@ -1,4 +1,4 @@
-Copyright (c) 2010, Michael Bostock
+Copyright (c) 2012, Michael Bostock
 All rights reserved.

 Redistribution and use in source and binary forms, with or without