Relative paths with Expo

@andrea or @wwwillchen have you changed your setups at all?

What are the additional packages to download and the babelrc file looking like?

Saw this as well:

@notbrent (or relevant person), would it be possible to add a quick section to the docs on the recommended way to setup relative paths? It’d be great if expo could choose one “officially recommended” way to go about it. I’ve seen differing things across the forums, slack and github issues that have me stuck in research/options paralysis for something I’m sure is a 10 minute thing if you know the bet route.