Copyright for unpaper source package in Xenial

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: unpaper
Upstream-Contact: Diego Elio Pettenò 
Source: https://github.com/Flameeyes/unpaper

Files: *
Copyright: 2005-2006 Jens Gulden 
           2011 Diego Elio Pettenò 
License: GPL-2
 Unpaper 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, version 2 of the License.
 .
 Unpaper 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 systems, the full text of the GNU General Public
 License version 2 can be found in the file
 `/usr/share/common-licenses/GPL-2'.