Usage readme

README.md

@@ -3,3 +3,25 @@
 This GitHub action runs code quality analysis on custom written code located in `web/modules/custom` and `web/themes/custom`.
 
 It includes PHPLint, PHPCS, PHPMD and PHPStan.
+
+Usage:
+```yaml
+jobs:
+  qa-code:
+    name: 'Check code quality'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+      - uses: eaudeweb/[email protected]
+      - uses: eaudeweb/[email protected]
+        with:
+          phplint: 'true'
+          phpmd: 'true'
+          phpcs: 'true'
+          phpcs_standards: 'Drupal,DrupalPractice'
+          phpcs_extensions: 'php,module,inc,install,profile,theme,test,info,yml'
+          phpstan: 'true'
+          phpstan_level: '9'
+```