add context for why we're using business cat here

deployment/netlify/README.md

@@ -24,18 +24,21 @@ and come back here when you're ready to deploy your app.
 ## Deploy a static site to Netlify
 
 The following instructions will help you set up a static site deployment with
-Netlify.
+Netlify. We use [Business Cat](http://github.com/business-cat) for this purpose.
+Business Cat is a machine user that allows us to build and/or install dependencies
+from private GitHub repositories. Using a machine account, rather than a personal account,
+guards against deployment failures if someone leaves DataMade or is otherwise removed
+from a private repository.
 
 ### Create a Netlify site and publish the first build
 
 1. Log into the Netlify console at https://app.netlify.com using the DataMade
    Netlify account. (The credentials can be found in the shared DataMade LastPass under `Netlify`.)
    We currently use a shared account because we don't have access to Netlify Teams.
 2. In the console, choose `New site from Git` to configure your app.
-3. Select the `GitHub` provider. Netlify will ask you to authenticate with GitHub. We
-   use [Business Cat](http://github.com/business-cat) for this purpose. Get credentials for Business Cat,
-   [add it as a collaborator](https://github.com/datamade/deploy-a-site/blob/master/Private-dependencies.md) to the repo you want to integrate,
-   authenticate with Netlify, and choose the repo from the dropdown menu.
+3. Select the `GitHub` provider. Netlify will ask you to authenticate with GitHub.
+   Get credentials for Business Cat, [add it as a collaborator](https://github.com/datamade/deploy-a-site/blob/master/Private-dependencies.md)
+   to the repo you want to integrate, authenticate with Netlify, and choose the repo from the dropdown menu.
 4. For the `Branch to deploy` option, select `deploy`. If you don't have a `deploy` branch
    yet, create one off of `main` so that you can verify the Netlify deployment.
 5. For the `Build command` option, input whatever command you use to generate