Update readme

README.md

@@ -2,29 +2,35 @@
 
 Use the zig compiler in your Github Action
 
-[Install](#install) - [Usage](#usage) - [License: Apache-2.0](#license)
+[Usage](#usage) - [License: Apache-2.0](#license)
-
-[![npm][npm-image]][npm-url]
-[![travis][travis-image]][travis-url]
-[![standard][standard-image]][standard-url]
-
-[npm-image]: https://img.shields.io/npm/v/setup-zig.svg?style=flat-square
-[npm-url]: https://www.npmjs.com/package/setup-zig
-[travis-image]: https://img.shields.io/travis/goto-bus-stop/setup-zig.svg?style=flat-square
-[travis-url]: https://travis-ci.org/goto-bus-stop/setup-zig
-[standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg?style=flat-square
-[standard-url]: http://npm.im/standard
-
-## Install
-
-```
-npm install setup-zig
-```
 
 ## Usage
 
-```js
+In a Github Actions workflow file, do something like:
-var setupZig = require('setup-zig')
+
+```yaml
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{matrix.os}}
+    steps:
+      - uses: actions/checkout@v1
+      - uses: goto-bus-stop/setup-zig@v1.0.0
+      - run: zig build test
+```
+
+Optionally set a Zig version:
+```yaml
+- uses: goto-bus-stop/setup-zig@v1.0.0
+  with:
+    version: 0.4.0 # The default is 0.5.0
+```
+
+If you are running Zig on Windows machines, you need to make sure that your .zig files use \n line endings and not \r\n. The `actions/checkout` action auto-converts line endings to \r\n, so add a `.gitattributes` file:
+```
+*.zig text eol=lf
 ```
 
 ## License