Create README.md

Author: daimor

README.md

@@ -0,0 +1,23 @@
+InterSystems Demo Deployment action
+===
+
+
+Usage
+==
+
+```yaml
+on:
+  push:
+    branches:
+      - master
+      - main
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy Demo
+        if: github.event.repository.fork == false && github.event.repository.is_template == false
+        uses: intersystems-community/demo-deployment@master
+        with:
+          name: demo
+```