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README.md

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+# setup-jank
+
+This action sets up [jank](https://jank-lang.org/) for use in GitHub Actions.
+
+> [!WARNING] 
+> Since jank is still in Alpha, this will always download the latest binary
+> built from main.
+
+
+## Usage
+
+```yaml
+- name: Setup jank
+  uses: jank-lang/setup-jank@main
+```
+
+## Support
+
+Currently, this action supports Debian/Ubuntu and macOS. Window is **not** supported.
+
+| OS            | Package                                                     |
+| ------------- | ----------------------------------------------------------- |
+| Debian/Ubuntu | [ppa.jank-lang.org](https://ppa.jank-lang.org/)             |
+| macOS         | [homebrew-jank](https://github.com/jank-lang/homebrew-jank) |