Add license note to README.md

README.md

@@ -39,3 +39,13 @@ To edit this repository in MakeCode.
 
 * for PXT/microbit
 <script src="https://makecode.com/gh-pages-embed.js"></script><script>makeCodeRender("{{ site.makecode.home_url }}", "{{ site.github.owner_name }}/{{ site.github.repository_name }}");</script>
+
+## License
+
+[Microbit Morse Code Sender](https://github.com/EsotericEnderman/microbit-morse-code-sender) Copyright (C) 2024 [Esoteric Enderman](https://enderman.dev)
+
+This program is free software: you can redistribute it and/or modify it under the terms of the [GNU General Public License](./LICENSE) as published by the [Free Software Foundation](https://www.fsf.org/), either [version 3](./LICENSE) 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](./LICENSE) for more details.
+
+You should have received a copy of the [GNU General Public License](./LICENSE) along with this program. If not, see <[gnu.org/licenses](https://www.gnu.org/licenses/)>.