Update deploy documentation to include required permissions and events (

#4)

* Update deploy documentation to include required permissions and events

* Review feedback

* Update required file path

docs/deploy.md

@@ -4,4 +4,10 @@ If you would like to run your own instance of this app, see the [docs for deploy
 
 This app requires these **Permissions & events** for the GitHub App:
 
-> **TODO**: List permissions required for deployment here. See [probot/stale](https://github.com/probot/stale/blob/master/docs/deploy.md) for an example.
+- Pull requests - **Read & Write**
+  - [x] Check the box for **Pull request** events
+- Repository webhooks - **Read-only**
+- Commit statuses - **Read & Write**
+  - [x] Check the box for **Status** events
+- Single File - **Read-only**
+  - Path: `.github/required-labels.yml`