fix(errors): change how config errors are displayed
fix(errors): change how config errors are displayed

Change how config errors are displayed.
Rather than rejecting the promise, which results in an Atom toast error message, treat the error like a lint error and display it in the footer.
This becomes far less annoying when opening projects that don't include an .eslintrc.json file.

Fixes #166

Adezandee/fast-eslint