Copyright for caffeine source package in Xenial

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: caffeine
Upstream-Contact: rrt@sc3d.org
Source: https://launchpad.net/caffeine

Files: debian/*
Copyright:
 2013—2015 Reuben Thomas 
 2015 Andrew Shadura 
License: GPL-3+

Files: *
Copyright: 2009-2013 Isaiah Heyer, Tommy Brunn, Brad Smith and Reuben Thomas
License: GPL-3+

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 as published by
 the Free Software Foundation; either version 3, or (at your option)
 any later version.
 .
 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, write to the Free Software Foundation,
 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 .
 On Debian systems, the complete text of the GNU General Public License
 version 3 can be found in ‘/usr/share/common-licenses/GPL-3’.