Log out of a CircleCI account

## Usage

`circleci auth logout [flags]`

## Flags

| Flag          | Description                                                                       |
| ------------- | --------------------------------------------------------------------------------- |
| `--jq string` | Process values from the response using jq syntax (see `circleci help formatting`) |
| `--json`      | Output as JSON                                                                    |

Global flags: `-c, --config`, `--debug`, `--no-color`, `-q, --quiet` — see `circleci --help`.

## Examples

- Log out of the current account: 
  `circleci auth logout`
- Log out, then sign in as a different account: 
  `circleci auth logout && circleci auth login`
- Log out without printing the confirmation line: 
  `circleci auth logout --quiet`
- Report where the token was removed from, for scripting: 
  `circleci auth logout --json --jq '.storage'`

## Details

Remove the stored API token, from the system keyring or from the YAML
config file depending on where it was saved.

CIRCLE_TOKEN is not affected: while it is set in the environment it
takes precedence over stored credentials, so the CLI stays
authenticated after logging out.

JSON fields: storage ("keyring" or "file"), path (the config file, present only when storage is "file")

