Single sign out support

Author: dstrockis

README.md

@@ -63,7 +63,7 @@ There are two projects in this sample.  Each needs to be separately registered i
 9. For the App ID URI, enter `https://<your_tenant_name>/TodoListWebApp`, replacing `<your_tenant_name>` with the name of your Azure AD tenant.  Click OK to complete the registration.
 1. While still in the Azure portal, click the **Configure** tab of your application.
 2. Locate the **Manage Manifest** button in the bottom drawer.  Click it and download your application's manifest as a `.json` file.
-3. Open the `.json` file in a text editor and change the `logoutUrl` property to `https://localhost:44320/Account/EndSession`.  This is the default single sign out URL for this sample.
+3. Open the `.json` file in a text editor and change the `logoutUrl` property to `https://localhost:44371/Account/EndSession`.  This is the default single sign out URL for this sample.
 4. Back in the Azure portal, click **Manage Manifest** then **Upload Manifest**, and upload your updated `.json` file.
 5. Finally, locate the **Client ID** value in the **Configure** tab and copy it to your clipboard.  You will need it shortly.
 12. Create a new key for the application.  Save the configuration so you can view the key value.  Save this aside for when you configure the project in Visual Studio.