Seth Vargo b8e4b0d515 Standardize on "auth method" ...

This removes all references I could find to:

- credential provider
- authentication backend
- authentication provider
- auth provider
- auth backend

in favor of the unified:

- auth method

2017-10-24 09:32:15 -04:00

..

index.html.md

Standardize on "auth method"

2017-10-24 09:32:15 -04:00