Documentation for Google & Facebook OAuth

[badbadmonkey]

Your instructions for setting up OAuth for the two most common services, Google & Facebook, are blank.

[leviwheatcroft]

I can't actually figure out how to get the credentials from google. I think I need to create a project at https://console.developers.google.com, then enable an api, but I'm a bit confused as to what API I need to enable if all I want to do is to authenticate users.
Happy to update the docs once I have this figured out...

[leviwheatcroft]

figured out google auth. PR for the docs here

[gka]

thanks! we're currently adding a simple plugin system to schnack. I will add your docs to https://github.com/schn4ck/schnack-plugins/blob/master/packages/schnack-plugin-auth-google/README.md