src: Switching to LGPL 3.0 license

Change-Id: Iabc3356c332be7c37ecbf5f0902328054b79f177
Refs: #1628
diff --git a/README-dev.md b/README-dev.md
index 53fa54a..b6d1a5e 100644
--- a/README-dev.md
+++ b/README-dev.md
@@ -9,20 +9,30 @@
 Licensing
 ---------
 
-If you agree with the terms of the New BSD License, please use the following license
-boilerplate into all `.hpp` and `.cpp` files:
+Contributions to the library must be licensed under LGPL 3.0 or compatible license.  If
+you are choosing LGPL 3.0, please use the following license boilerplate in all `.hpp` and
+`.cpp` files:
 
 
-    /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+    /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
     /**
-     * Copyright (c) Year(s),  Copyright Holder.
-     * All rights reserved.
+     * Copyright (c) [Year(s)] [Copyright Holder].
      *
      * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
-     * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
      *
-     * This file licensed under New BSD License.  See COPYING for detailed information about
-     * ndn-cxx library copyright, permissions, and redistribution restrictions.
+     * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+     * terms of the GNU Lesser General Public License as published by the Free Software
+     * Foundation, either version 3 of the License, or (at your option) any later version.
+     *
+     * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
+     * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+     * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
+     *
+     * You should have received copies of the GNU General Public License and GNU Lesser
+     * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+     * <http://www.gnu.org/licenses/>.
+     *
+     * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
      ////// [optional part] //////
      *
      * @author Author's Name <email@domain-or-homepage://url>