Sharable config?

[lejoe]

I'd like to question the usefullness of this repo.
As mentioned in this long thread from @sindresorhus the value of putting our defaults in this repo isn't that great if you anyway need to add all the peerdependencies by hand to your project:
eslint/eslint#3458

I'd rather merge this back to our boilerplate so it's done or move the peerdependencies to dependencies with the trick in the thread (leaning toward the first)

wdyt?