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README.md

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+# Nix Installer Action
+
+You can use `nix-installer` as a Github action like so:
+
+```yaml
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  lints:
+    name: Build
+    runs-on: ubuntu-22.04
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install Nix
+      uses: DeterminateSystems/nix-installer@main
+      with:
+        # Allow the installed Nix to make authenticated Github requests.
+        # If you skip this, you will likely get rate limited.
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+    - name: Run `nix build`
+      run: nix build .
+```