src: Update copyright notices for files modified in 2015

refs: #2398

Change-Id: I83b7ad4da70cf784aa478295a873bf6411428acb
diff --git a/README-dev.md b/README-dev.md
index e2bbf3a..a8c564a 100644
--- a/README-dev.md
+++ b/README-dev.md
@@ -1,12 +1,15 @@
 Requirements
----------------------
+------------
 
-Include the following header into all `.hpp` and `.cpp` files:
+Contributions to NLSR must be licensed under GPL 3.0 or compatible license.  If you are
+choosing GPL 3.0, please use the following license boilerplate in all `.hpp` and `.cpp`
+files:
+
+Include the following header in all `.hpp` and `.cpp` files:
 
     /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
     /**
-     * Copyright (c) 2014  The University of Memphis,
-     *                     Regents of the University of California
+     * Copyright (c) [Year(s)],  [Copyright Holder(s)].
      *
      * This file is part of NLSR (Named-data Link State Routing).
      * See AUTHORS.md for complete list of NLSR authors and contributors.
@@ -21,13 +24,12 @@
      *
      * You should have received a copy of the GNU General Public License along with
      * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
-     ////// [optional part] //////
-     *
-     * \author Author's Name <email@domain>
-     * \author Other Author's Name <another.email@domain>
-     ////// [end of optional part] //////
      **/
 
+If you are affiliated with an NSF-supported NDN project institution,
+please use the [NDN Team License Boilerplate]
+(http://redmine.named-data.net/projects/nlsr/wiki/NDN_Team_License_Boilerplate_(NLSR)).
+
 Recommendations
 ---------------