Fixed copyright, it is GPL-3+ not GPL-2+

debian/copyright

@@ -3,24 +3,20 @@ Source: http://gitlab.devlabs.linuxassist.net/awit-dbackup/awit-dbackup
 
 Files: *
 Copyright: Copyright (C) 2010-2014, AllWorldIT
-License: GPL-2+
- 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 2 of the License, or (at your option) any later
- version.
+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 of the License, 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.
+ 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 package; if not, write to the Free
- Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- Boston, MA  02110-1301 USA
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  .
- 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'.
+ On Debian systems, the complete text of the GNU General Public License
+ version 3 can be found in '/usr/share/common-licenses/GPL-3'.
+