Is --help out of date?

[max-sixty]

Thanks for isort and congrats on the latest release!

I'm was a bit confused on the default behavior. [--help](https://github.com/timothycrosley/isort/blob/develop/isort/main.py#L133) states:

        "within logical sections. Run with no arguments to run "
        "interactively. Run with `-` as the first argument to read from "
        "stdin. Otherwise provide a list of files to sort."

Changelog states:

isort now does nothing, beyond giving instructions and exiting status code 0, when ran with no arguments.
    a new --interactive flag has been added to enable the old style behaviour.

I think --help is out of date, is that right?

[timothycrosley]

Thanks for reporting this issue! I've fixed it with the 5.0.5 patch release. Sorry for any confusion this caused!