Update 4. Add auth features.md (#81)

Author: natemcmaster

docs/4. Add auth features.md

@@ -24,7 +24,7 @@ In this module we're going to add the capability for users to register and sign-
    ```
 1. Run this command to generate the code to use Identity.
    ```
-   dotnet aspnet-codegenerator identity --dbContext FrontEnd.Data.IdentityDbContext --userClass FrontEnd.Data.User
+   dotnet aspnet-codegenerator identity --dbContext FrontEnd.Data.IdentityDbContext --userClass FrontEnd.Data.User --useDefaultUI
    ```
 
 ## Organize the newly created files
@@ -154,6 +154,10 @@ In this module we're going to add the capability for users to register and sign-
 > We now need to override the default Register page to add UI for accepting the admin creation key and verifying it when processing the request
 
 1. Run the Identity scaffolder again, but this time select the `Account\Register` page in the list of files to override and select the `IdentityDbContext (FrontEnd.Data)`
+   * On command line, run
+     ```
+     dotnet aspnet-codegenerator identity --files Account.Register
+     ```
 1. Update the `RegisterModel` class in the `Register.cshtml.cs` file to accept `IAdminService` and `IdentityDbContext` parameters and save them to local members:
     ``` c#
     [AllowAnonymous]