Adding maintainers?

[stephenyeargin]

Would y'all be amenable to adding to the maintainer team? I've got a handful of Hubot script packages I maintain, happy to take this one on for general purpose maintenance.

(Mainly looking to get #50 taken care of for Hubot 9+ compatibility.)

cc @technicalpickles @HaroldPutman

[joeyguerra]

I can help as well if I'm a maintainer.