add minimal example on README

README.md

@@ -1,8 +1,22 @@
-# GitHub Runner ECS Task Action
+# Trigger External Workflow Action
 
-GH Action to start a ECS task with a Self Hosted Runner
-
-- https://github.com/PasseiDireto/trigger-external-workflow-action
+GitHub Action that triggers a Workflow from another repository using "repository_dispatch" event
 
 ## Usage
-.
+
+```yaml
+
+on: [push, workflow_dispatch]
+jobs:
+  trigger:
+    runs-on: ubuntu-latest
+    name: "📦 Trigger Project Test"
+    steps:
+    - uses: passeidireto/trigger-external-workflow-action@main
+      env:
+        PAYLOAD_AUTHOR: ${{ github.author }}
+      with:
+        repository: my-org/my-repo
+        event: doc_update
+        github_pat: ${{ secrets.pat_with_access }}
+```