Update README.md

Author: scale-tone

custom-backends/dotnetIsolated-mssql/README.md

@@ -29,3 +29,15 @@ func start
 ```
 
 * Navigate to http://localhost:7072/durable-functions-monitor
+
+
+## How to deploy to Azure
+
+[![Deploy to Azure](https://aka.ms/deploytoazurebutton)](https://portal.azure.com/#create/Microsoft.Template/uri/https%3A%2F%2Fraw.githubusercontent.com%2Fmicrosoft%2FDurableFunctionsMonitor%2Fmain%2Fcustom-backends%2FdotnetIsolated-mssql%2Farm-template.json) 
+
+This button will deploy a new DfMon instance into your Azure Subscription from [this NuGet package](https://www.nuget.org/packages/DurableFunctionsMonitor.DotNetIsolated.MsSql/). You will need to have an AAD app created and specify its Client Id as one of the template parameters. 
+
+See instructions on [how to configure authentication/authorization here](How-to-configure-authentication).
+
+NOTE: the instance will be deployed to the selected Resource Group's location. The default **Region** parameter in Azure Portal's *Deploy from a custom template* wizard has no effect here. It only defines where the deployment metadata will be stored, so feel free to leave it to default.
+