[PATCH v4 04/12] man: document 'insert' command

[David Bremner]

Peter Wang <novalazy at gmail.com> writes:
> +
> +.B notmuch insert
> +reads a message from standard input
> +and delivers it to the specified maildir folder,
> +then incorporates the message into the notmuch database.
> +It is an alternative to using a separate tool to deliver
> +the message then running
> +.B notmuch new
> +afterwards.
> +

I think this should document how the maildir is selected. I agree it
isn't that surprising, but the language "specified maildir folder" makes
me think it is somehow specified as part of the command invocation.