Lack of license information

[Alessio Treglia]

If you intend to release your application under the terms of the GPL license, you must include a copy of the license in the tarball too.

Moreover, almost all *.py files under ./earcandy miss license header.

An exception is Client.py, which shows the following text:

# 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/>.

It would be appreciated putting the same header at the beginning of each source file.