Docs for bin/bench

[leto]

trafficstars

Mmmmmm, docs.

[leto]

perldoc bin/bench

[notbenh]

and allso allow -h --help ducky just didit

[notbenh]

-h/--help is shoddly implemented but its done. as for perldoc I'm going to hold off and see what we decide to do with Tool::Bench as bench really should just manage @ARGV and possibly do some formating for the output if needed.