on-demand setup for self-hosted runners

Author: mw-hrastega

README.md

@@ -1,14 +1,13 @@
 # Action for Running MATLAB Tests
-The [Run MATLAB Tests](#run-matlab-tests) action enables you to run MATLAB® and Simulink® tests and generate test and coverage artifacts on a [self-hosted](https://docs.github.com/en/actions/hosting-your-own-runners/managing-self-hosted-runners/about-self-hosted-runners) or [GitHub®-hosted](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners) runner:
-- To use a self-hosted runner, you must set up a computer with MATLAB as your self-hosted runner and register the runner with GitHub Actions. The runner uses the topmost MATLAB release on the system path to execute your workflow.
-- To use a GitHub-hosted runner, you must include the [Setup MATLAB](https://github.com/matlab-actions/setup-matlab/) action in your workflow to set up your preferred MATLAB release (R2021a or later) on the runner.
-
+The [Run MATLAB Tests](#run-matlab-tests) action enables you to run MATLAB® and Simulink® tests and generate test and coverage artifacts on a [GitHub®-hosted](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners) or [self-hosted](https://docs.github.com/en/actions/hosting-your-own-runners/managing-self-hosted-runners/about-self-hosted-runners) runner:
+- To use a GitHub-hosted runner, include the [Setup MATLAB](https://github.com/matlab-actions/setup-matlab/) action in your workflow to set up your preferred MATLAB release (R2021a or later) on the runner.
+- To use a self-hosted runner, set up a computer with MATLAB on its path and register the runner with GitHub Actions. (On self-hosted UNIX® runners, you can also use the **Setup MATLAB** action instead of having MATLAB already installed.) The runner uses the topmost MATLAB release on the system path to execute your workflow.
 
 ## Examples
 Use the **Run MATLAB Tests** action to automatically run tests authored using the MATLAB unit testing framework or Simulink Test™. You can use this action with optional inputs to generate various test and coverage artifacts.
 
 ### Run Tests in MATLAB Project
-On a self-hosted runner, run the tests in your [MATLAB project](https://www.mathworks.com/help/matlab/projects.html). To run the tests, specify the **Run MATLAB Tests** action in your workflow.
+On a self-hosted runner that has MATLAB installed, run the tests in your [MATLAB project](https://www.mathworks.com/help/matlab/projects.html). To run the tests, specify the **Run MATLAB Tests** action in your workflow.
 
 ```yaml
 name: Run Tests in MATLAB Project
@@ -73,14 +72,14 @@ jobs:
 ``` 
 
 ### Use MATLAB Batch Licensing Token
-On a GitHub-hosted runner, you need a [MATLAB batch licensing token](https://github.com/mathworks-ref-arch/matlab-dockerfile/blob/main/alternates/non-interactive/MATLAB-BATCH.md#matlab-batch-licensing-token) if your project is private or if your workflow includes transformation products, such as MATLAB Coder™ and MATLAB Compiler™. Batch licensing tokens are strings that enable MATLAB to start in noninteractive environments. You can request a token by submitting the [MATLAB Batch Licensing Pilot](https://www.mathworks.com/support/batch-tokens.html) form. 
+When you define a workflow using the [Setup MATLAB](https://github.com/matlab-actions/setup-matlab/) action, you need a [MATLAB batch licensing token](https://github.com/mathworks-ref-arch/matlab-dockerfile/blob/main/alternates/non-interactive/MATLAB-BATCH.md#matlab-batch-licensing-token) if your project is private or if your workflow includes transformation products, such as MATLAB Coder™ and MATLAB Compiler™. Batch licensing tokens are strings that enable MATLAB to start in noninteractive environments. You can request a token by submitting the [MATLAB Batch Licensing Pilot](https://www.mathworks.com/support/batch-tokens.html) form. 
 
 To use a MATLAB batch licensing token:
 
 1. Set the token as a secret. For more information about secrets, see [Using secrets in GitHub Actions](https://docs.github.com/en/actions/security-guides/using-secrets-in-github-actions).
 2. Map the secret to an environment variable named `MLM_LICENSE_TOKEN` in your workflow. 
 
-For example, use the latest release of MATLAB on a GitHub-hosted runner to run the tests in your private project. To set up the latest release of MATLAB on the runner, specify the [Setup MATLAB](https://github.com/matlab-actions/setup-matlab/) action in your workflow. To run the tests, specify the **Run MATLAB Tests** action. In this example, `MyToken` is the name of the secret that holds the batch licensing token.
+For example, use the latest release of MATLAB on a GitHub-hosted runner to run the tests in your private project. To set up the latest release of MATLAB on the runner, specify the **Setup MATLAB** action in your workflow. To run the tests, specify the **Run MATLAB Tests** action. In this example, `MyToken` is the name of the secret that holds the batch licensing token.
 
 ```YAML
 name: Use MATLAB Batch Licensing Token