License headers of the Inkscape extension

[roelj]

Could you add GPLv2+ license headers to the Inkscape extension files ("wpi2svg-ext.py" and "wpi_input.inx")?

In that case I can ship the extension along with the program as an official GNU package :).

An example is:

/*
* Copyright (C) 2013 {Your name/nickname and/or e-mail}
*
* This file is part of InklingReader
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see (http://www.gnu.org/licenses/).
*/

Adjust the comment style to the programming language specific comment style.

[su-v]

Sorry for the delay - is 4fdbcd1dd5cca047c9eb58f4eddba18200dbf7e0 ok?

[su-v]

Missed to add the keywords referencing this issue to the commit message, oops (I don't use github a lot).

[roelj]

This is great. Thanks!