Fix copyright

debian/copyright

@@ -14,11 +14,11 @@ Files: src/application.*
        src/saveimagejob.*
        src/settings.*
 Copyright: Copyright (C) 2013 - 2014  Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
-License: GPL-2.0+
+License: GPL-2+
 
 Files: src/imageview.*
 Copyright: Copyright (C) 2013
-License: GPL-2.0+
+License: GPL-2+
 
 Files: src/job.*
        src/screenshotdialog.*
@@ -45,7 +45,7 @@ License: LGPL-2.1+
  On Debian systems, the complete text of the GNU Lesser General
  Public License version 2.1 can be found in "/usr/share/common-licenses/LGPL-2.1".
 
-License: GPL-2.0
+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, version 2 of the License.
@@ -57,3 +57,17 @@ License: GPL-2.0
  .
  On Debian systems, the complete text of the GNU General Public License
  version 2 can be found in "/usr/share/common-licenses/GPL-2".
+
+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.
+ .
+ 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.
+ .
+ On Debian systems, the complete text of the GNU General Public License
+ version 2 can be found in "/usr/share/common-licenses/GPL-2".