init using_github_apps.md docs

Author: GrantBirki

README.md

@@ -200,7 +200,7 @@ As seen above, we have a single example step. Perhaps you would actually use a r
 | `allowlist_pat` | `false` | `"false"` | A GitHub personal access token with "read:org" scopes. This is only needed if you are using the "allowlist" option with a GitHub org team. For example: `"my-org/my-team"` |
 | `skip_completing` | `true` | `"false"` | If set to `"true"`, skip the process of completing the Action. This is useful if you want to customize the way this Action completes - For example, custom reactions, comments, etc |
 | `fork_review_bypass` | `true` | `"false"` | If set to "true", allow forks to bypass the review requirement if the operation is being made on a pull request from a fork. This option is potentially dangerous if you are checking out code in your workflow as a result of invoking this Action. If the code you are checking out has not been reviewed, then you might open yourself up to a TOCTOU vulnerability. You should always ensure that the code you are checking out has been reviewed, and that you checkout an exact commit sha rather than a ref. |
-| `allow_github_apps` | `true` | `"true"` | If set to `true`, allow GitHub Apps to interact with or trigger this Action view issue/pull_request comments. If you want to explicitly prevent GitHub Apps from invoking this Action, then set this to `false`. |
+| `allow_github_apps` | `true` | `"true"` | If set to `true`, allow GitHub Apps to interact with or trigger this Action view issue/pull_request comments. If you want to explicitly prevent GitHub Apps from invoking this Action, then set this to `false`. For more information, see the [GitHub App docs for this Action](./docs/using_github_apps.md). |
 
 ## Outputs 📤
 

docs/using_github_apps.md

@@ -0,0 +1,5 @@
+# Using GitHub Apps
+
+> See the pull request that originally implemented these changes here: [#70](https://github.com/github/command/pull/70)
+
+TODO: @jcfr please fill out some brief docs here. Thank you!