add AUTHORS and license

AUTHORS

@@ -0,0 +1,5 @@
+Authors
+--------
+
+Emmanuel Garette <gnunux@gnunux.info> lead developer
+

tiramisu_parser.py

@@ -1,3 +1,19 @@
+# Copyright (C) 2018 Team tiramisu (see AUTHORS for all contributors)
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser 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 Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
 from typing import Union, List
 from argparse import ArgumentParser, Namespace, SUPPRESS
 from tiramisu import Option, OptionDescription, Config, BoolOption, StrOption, IntOption, \