Option to generate more than one passphrase at a time?

[sts10]

I've noticed that other similar command-line passphrase generators usually include an option for specifying how many passphrases the user wants the tool to generate.

E.g. phrazer -n 5 could generate and print 5 passphrases.

Is this a common enough use-case to build in to Phrazer? Do sys admins sometimes need to generate multiple passphrases in one go?

[sts10]

Solved in #12, though could be more efficient.