Update LICENSE

LICENSE

-This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. 
-To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/.
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+Games in Concert (c) by Simon Pfaff, Olav Lervik, Reto Spoerri, Martin Neukom, Margarethe Jahrmann
+
+Games in Concert is licensed under a
+Creative Commons Attribution-ShareAlike 4.0 International License.
+
+You should have received a copy of the license along with this
+work. If not, see <http://creativecommons.org/licenses/by-sa/4.0/>.
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