README: update copyright to 2011

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

README

@@ -25,7 +25,7 @@ for details.
 
 SYSLINUX is:
 
-   Copyright 1994-2010 H. Peter Anvin et al - All Rights Reserved
+   Copyright 1994-2011 H. Peter Anvin et al - All Rights Reserved
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by