docs: Updating copyright notices in files
diff --git a/model/ndn-header.cpp b/model/ndn-header.cpp
index 89c9251..2807c29 100644
--- a/model/ndn-header.cpp
+++ b/model/ndn-header.cpp
@@ -1,6 +1,6 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
- * Copyright (c) 2011-2014 Regents of the University of California.
+ * Copyright (c) 2011-2015 Regents of the University of California.
*
* This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
* contributors.