Document how to grab credentials from the keychain

[johnsyweb]

Context

I used unwrappr locally for the first time in a few months and on a clean machine and had lost my command-line history for grabbing my Personal Access Token.

Change

Document how I do this, so that others can use it (and so that I don't have to recreate it in future).

Cc

@orien

[domon-envato]

TIL security 🙏

It seems like the builds are failing because of Rubocop offenses 🤔

[joesustaric]

yeah me too TIL security , pete = 🧠

✅ - when green

[orien]

Thanks @johnsyweb 🙇