restructured folders, added GNU GPL

# Copyright (C) 2013  Simon Howroyd
#
#     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.
#
#     You should have received a copy of the GNU General Public License
#     along with this program.  If not, see
<http://www.gnu.org/licenses/>.