Copyright for checkbox-ng source package in Xenial

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: checkbox-ng
Source: https://launchpad.net/checkbox

Files: *
Copyright: Copyright 2012-2014 Canonical Ltd.
License: GPL-3
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License version 3,
 as published by the Free Software Foundation.
 .
 This program 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 this program.  If not, see .
 .
 On Debian-based systems the full text of the GPL, version 3, can be found at
 /usr/share/common-licenses/GPL-3.