Adding readme.md file in resource-manager folder

specification/edge/resource-manager/readme.md

@@ -0,0 +1,15 @@
+# Edge
+
+> see https://aka.ms/autorest
+
+
+## Configuration
+
+### Basic Information
+
+Required if any services under this folder are RPaaS.
+
+```yaml
+openapi-type: arm
+openapi-subtype: rpaas
+```