Update build_mumble_web.sh

build_mumble_web.sh

 #!/bin/bash
 
+#    build_mumble_web.sh
+#    Copyright (C) 2020  Armin Co
+#
+#    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/>.
+
+
+
 # Mumble-Web repository
 REPOSITORY="mumble-web"
 URL_GITHUB="https://github.com/Johni0702/${REPOSITORY}.git"