Add createDevice support

(16:20:28) Azelphur: sailerboy: pushbullet create device function required
(16:20:29) Azelphur: kgo things.
(16:20:39) sailerboy: Azelphur, not in the API, I don't think
(16:20:42) Azelphur: see "create a new device" on this page https://docs.pushbullet.com/v2/devices/
(16:20:43) Azelphur: yes it is
(16:20:50) Azelphur: but it was added somewhat recently
(16:20:50) sailerboy: fuck
(16:21:00) sailerboy: I'll do it later
(16:21:04) sailerboy: this weekend perhaps
(16:21:10) Azelphur: NOT FAST ENOUGH.
(16:21:14) sailerboy: I've got a few papers and exams that I need to do
(16:21:20) sailerboy: (I accept pull requests)
(16:21:21) Azelphur: I'll do it and send you a PR
(16:21:30) sailerboy: :D