Update Step by Step Tutorials to Use .NET CLI for Package Management

tutorials/nservicebus-step-by-step/1-getting-started/tutorial.md

@@ -33,10 +33,10 @@ First, let's create a basic solution and include the dependencies we need.
  3. Set the project name to **ClientUI**.
  4. Set the solution name to **RetailDemo**.
 
-Next, add the NServiceBus NuGet package as a dependency. From the [NuGet Package Manager Console](https://docs.microsoft.com/en-us/nuget/tools/package-manager-console), type the following:
+Next, add the NServiceBus NuGet package as a dependency. Using PowerShell or another terminal alternative, navigate to the ClientUI project directory and run the following command:
 
 ```
-Install-Package NServiceBus -ProjectName ClientUI
+dotnet add package NServiceBus
 ```
 
 This adds an NServiceBus.Core assembly reference to the ClientUI project. Now we're ready to start writing code.

tutorials/nservicebus-step-by-step/3-multiple-endpoints/tutorial.md

@@ -80,9 +80,9 @@ Let's split apart the endpoint we created in the previous lesson. We'll reconfig
 First, let's create a project for our new endpoint.
 
  1. Create a new **Console Application** project named **Sales**.
- 1. In the **Sales** project, add the NServiceBus NuGet package:
+ 1. In the same directory as the **Sales** project, add the NServiceBus NuGet package using the .NET CLI:
       ```
-      Install-Package NServiceBus -ProjectName Sales
+    dotnet add package NServiceBus
       ```
  1. Rename **Messages** project to **Sales.Messages**
  1. In the **Sales** project, add a reference to the **Sales.Messages** project, so that we have access to the `PlaceOrder` message.