docs: Update of copyright and license statement in all .hpp and .cpp files

Change-Id: I4082db67f2390482615a780d91a513f09d57a9a4
Refs: #1266
diff --git a/daemon/face/udp-channel.hpp b/daemon/face/udp-channel.hpp
index f5dd16e..00222bf 100644
--- a/daemon/face/udp-channel.hpp
+++ b/daemon/face/udp-channel.hpp
@@ -1,8 +1,26 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (C) 2014 Named Data Networking Project
- * See COPYING for copyright and distribution information.
- */
+ * Copyright (c) 2014  Regents of the University of California,
+ *                     Arizona Board of Regents,
+ *                     Colorado State University,
+ *                     University Pierre & Marie Curie, Sorbonne University,
+ *                     Washington University in St. Louis,
+ *                     Beijing Institute of Technology
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NFD 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
 
 #ifndef NFD_FACE_UDP_CHANNEL_HPP
 #define NFD_FACE_UDP_CHANNEL_HPP
@@ -151,7 +169,7 @@
    * \brief If true, it means the function listen has already been called
    */
   bool m_isListening;
-  
+
   /**
    * \brief every time m_idleFaceTimeout expires all the idle (and on-demand)
    *        faces will be removed