Updated the airWrite examples to be in milliseconds

Reduced the timer to be in-line with the μs to ms conversion for airWrite.

Note straight conversion should've made these 1ms, but I seemed to get better results with a bit higher number, your milage may vary(tm) depending on your environment and camera setup, etc.

(This is layered on top of the move_examples branch, so accept that one first and this should merge cleanly).