added gnu license

README.md

@@ -37,3 +37,17 @@ You need to set some environment variables to run the container.
 ## Known Limitations
 * You must extract and provide the meetingID, which is not visible within the room.
 * ffmpeg settings to be improved
+
+## License
+    BigBlueButton-liveStreaming 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.
+
+    BigBlueButton-liveStreaming 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 BigBlueButton-liveStreaming.  If not, see [GNU.ORG](https://www.gnu.org/licenses/>).