--help text mentions postgres

[DaveDustin]

If you display help information, the descriptive information for -U states

-U, --username TEXT Username to connect to the postgres database.

[MrMeemus]

@DaveDustin Thanks for find! We will have this fixed in our next release.

[pensivebrian]

Fixed with commit beeb296.

[MrMeemus]

Fix has been released in 0.8.0. Thanks!