Update README.md

Author: felarof99

README.md

@@ -6,3 +6,7 @@
 ## Contributing
 
 For information on how to contribute to this project and set up your development environment, please refer to the [CONTRIBUTING.md](CONTRIBUTING.md) file.
+
+## License
+
+This project is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0). See the [LICENSE](LICENSE) file for details.