Regenerate README file (#222)

Co-authored-by: Alain Schlesser <alain.schlesser@gmail.com>

Author: github-actions[bot]

README.md

@@ -199,6 +199,10 @@ Want to contribute a new feature? Please first [open a new issue](https://github
 
 Once you've decided to commit the time to seeing your pull request through, [please follow our guidelines for creating a pull request](https://make.wordpress.org/cli/handbook/pull-requests/) to make sure it's a pleasant experience. See "[Setting up](https://make.wordpress.org/cli/handbook/pull-requests/#setting-up)" for details specific to working on this package locally.
 
+### License
+
+This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.
+
 ## Support
 
 GitHub issues aren't for general support questions, but there are other venues you can try: https://wp-cli.org/#support