Add License section to README (#8)

* Add License section to README

Added a License section to the README.

* Linter fixes

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Co-authored-by: Greg Mohler <110078080+CallMeGreg@users.noreply.github.com>
Co-authored-by: Kitty Chiu <42864823+KittyChiu@users.noreply.github.com>

Author: 3 people

README.md

@@ -136,6 +136,10 @@ For more detailed development instructions, including GitHub Codespaces setup, s
 
 ---
 
+## License
+
+This project is licensed under the terms of the MIT open source license. Please refer to the [LICENSE](./LICENSE) file for the full terms.
+
 ## Special thanks
 
 See the repository's [list of contributors](https://github.com/github/github-well-architected/graphs/contributors), as well as authors in Issues and Discussions, to see who all have contributed to the success of this project.