README in rio-0.5.1 vs README in rio-0.6.0

@@ -1,5 +1,5 @@
-Copyright (c) 2005-2012 Christopher Kleckner
+Copyright (c) 2005-2017 Christopher Kleckner
 All rights reserved
 
 This file is part of the Rio library for ruby.
 
 Rio is free software; you can redistribute it and/or modify