chore: update readme

README.md

@@ -18,3 +18,13 @@ A simple lb-phone application to manage the native [qbx_core](https://github.com
 - [qbx_core](https://github.com/qbox-project/qbx_core) 1.7.0 or later
 - [lb-phone](https://lbphone.com/)
 - [ox_lib](https://github.com/overextended/ox_lib)
+
+# Copyright
+
+Copyright © 2024 Solareon <https://github.com/solareon>
+
+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 <https://www.gnu.org/licenses/>.