Created by: mkazantsev
Solves #1796 (closed) by always showing create-react-app as a command name in help messaging.
Immediate consequence is that even if I explicitly run the job as node packages/create-react-app/index.js, it's going to show me create-react-app and not index, as before. Which in my opinion makes more sense, but might seem confusing to some experienced contributors.
