Added Workload Factory API Samples

Author: kcantrel

Management-Utilities/Workload-Factory-API-Samples/README.md

@@ -14,8 +14,14 @@ To run these scripts, you need to have the following prerequisites:
 Hopefully with these samples you'll be able to create your own scripts that use any the Workload Factory APIs.
 If you do create a new script, please consider contributing it back to this repository so that others can benefit from it.
 
-Note that all the scripts support a `-h` option that will display a help message for that script.
+Note that all scripts allow you to set environment variables to pass options instead of having to use the
+command line options. For example, instead of using the `-t` option to pass the
+[BlueXP Refresh Token](https://docs.netapp.com/us-en/bluexp-automation/platform/create_user_token.html#1-generate-a-netapp-refresh-token),
+you can set the `REFRESH_TOKEN` environment variable.
 
+Also note that all scripts use the `-h` option to display the help message, which includes the available options and their descriptions.
+
+## Available Scripts
 | Script | Description |
 | --- | --- |
 | [list_bluexp_accts](list_bluexp_accts) | This list all the BlueXP accounts (a.k.a. organizations) that you have access to. |