update readme

Author: leavesster

README.md

@@ -1 +1,17 @@
 # skip-duplicate-actions-demo
+
+
+```yml
+jobs:
+  skip:
+    runs-on: ubuntu-latest
+    outputs:
+      should_skip: ${{ steps.skip_check.outputs.should_skip }}
+    steps:
+      - id: skip_check
+        uses: fkirc/skip-duplicate-actions@v5
+        with:
+          cancel_others: 'true'
+          skip_after_successful_duplicate: 'false'
+          paths_ignore: '["**.md", ".github/**"]'
+```