Add extra note that if `--maxChanges` is not passed in, developers can manually push

[TimvdLippe]

At first I thought I should always use --maxChanges to actually push the updates to the repository. Later, I discovered I can just run it without and manually push from the freshly cloned repository.

It would be great to either add this to the README or add a comment that, when this argument is not passed in, it states you can manually make modifications and then push changes.