added license.txt

src/license/se/license.txt

+
+ ******************************************************************************
+ MontiCAR Modeling Family, www.se-rwth.de
+ Copyright (c) 2017, Software Engineering Group at RWTH Aachen,
+ All rights reserved.
+
+ This project 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 3.0 of the License, or (at your option) any later version.
+ This library 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 project. If not, see <http://www.gnu.org/licenses/>.
+*******************************************************************************