Update copyright years to include 2014.
diff --git a/AUTHORS b/AUTHORS
index ca49d95..6c73ee2 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,6 +1,6 @@
 /* FLAC - Free Lossless Audio Codec
  * Copyright (C) 2001-2009  Josh Coalson
- * Copyright (C) 2011-2013  Xiph.Org Foundation
+ * Copyright (C) 2011-2014  Xiph.Org Foundation
  *
  * This file is part the FLAC project.  FLAC is comprised of several
  * components distributed under different licenses.  The codec libraries