Update README.md

README.md

@@ -21,7 +21,7 @@ This folder contains the source code of the module, a managed gateway loader and
 This module requires the .NET Core SDK V1.1. You can build the module from Visual Studio 2017 by opening the solution file, right clicking the GatewayApp.NetCore project and selecting "publish".
 
 # Configuring the Module
-The OPC UA nodes whose values should be published to Azure IoT Hub can be configured by creating a "publishednodes.json" file. This file is auto-generated and persisted by the module automatically when using the Publisher's OPC UA server interface from a client. It has the format:
+The OPC UA nodes whose values should be published to Azure IoT Hub can be configured by creating a "publishednodes.json" file. This file is auto-generated and persisted by the module automatically when using the Publisher's OPC UA server interface from a client. If you want to create the file manually, below is a sample publishednodes.json file:
 ```
 [
   {