Setup mark installation (#1)

README.md

@@ -1,2 +1,32 @@
-# setup-mark-action
-This GitHub action installs kovetskiy/mark CLI.
+# Setup mark action
+
+[![Stand With Ukraine](https://raw.githubusercontent.com/vshymanskyy/StandWithUkraine/main/badges/StandWithUkraine.svg)](https://stand-with-ukraine.pp.ua)
+![Release](https://img.shields.io/github/v/release/fabasoad/setup-mark-action?include_prereleases)
+![functional-tests](https://github.com/fabasoad/setup-mark-action/actions/workflows/functional-tests.yml/badge.svg)
+![security](https://github.com/fabasoad/setup-mark-action/actions/workflows/security.yml/badge.svg)
+![linting](https://github.com/fabasoad/setup-mark-action/actions/workflows/linting.yml/badge.svg)
+
+This action installs [mark](https://github.com/kovetskiy/mark) CLI tool.
+
+Supported OS: Linux and macOS.
+
+## Prerequisites
+
+The following tools have to be available on a runner prior using this GitHub
+action:
+
+- [curl](https://curl.se/)
+- [tar](https://www.gnu.org/software/tar/)
+
+## Inputs
+
+```yaml
+- uses: fabasoad/setup-mark-action@v0
+  with:
+    # (Optional) mark version. Defaults to "9.11.1".
+    version: "9.11.1"
+```
+
+## Outputs
+
+None.