mgmt: declare the constructor of FaceMonitor explicit

Also fix the copyright notice at the top of the header file.

Change-Id: I01f4da97109652a8b1540aa57a57f67fa56a193d
diff --git a/src/mgmt/nfd/face-monitor.hpp b/src/mgmt/nfd/face-monitor.hpp
index 5429ea1..430172b 100644
--- a/src/mgmt/nfd/face-monitor.hpp
+++ b/src/mgmt/nfd/face-monitor.hpp
@@ -1,6 +1,12 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2016 Regents of the University of California.
+ * Copyright (c) 2014-2017 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,
+ *                         The University of Memphis.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -19,32 +25,6 @@
  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
  */
 
-/**
- * Original copyright notice from NFD:
- *
- * 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,
- *                      The University of Memphis
- *
- * 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 NDN_MGMT_NFD_FACE_MONITOR_HPP
 #define NDN_MGMT_NFD_FACE_MONITOR_HPP
 
@@ -55,15 +35,13 @@
 namespace nfd {
 
 /** \brief A subscriber for Face status change notification stream
- *  \sa http://redmine.named-data.net/projects/nfd/wiki/FaceMgmt#Face-Status-Change-Notification
+ *  \sa https://redmine.named-data.net/projects/nfd/wiki/FaceMgmt#Face-Status-Change-Notification
  */
 class FaceMonitor : public util::NotificationSubscriber<FaceEventNotification>
 {
 public:
-  FaceMonitor(Face& face)
-    : NotificationSubscriber<nfd::FaceEventNotification>(face, "ndn:/localhost/nfd/faces/events")
-  {
-  }
+  explicit
+  FaceMonitor(Face& face);
 };
 
 } // namespace nfd