Build tutorial around ophyd with non-EPICS array detectors

[danielballan]

https://gist.github.com/danielballan/84484f940aea836ac997d3873c88d762
https://github.com/bluesky/tutorials/blob/master/bluesky-tutorial-utils/bluesky_tutorial_utils/_newton.py
https://github.com/thomascobb/bluefly/blob/master/bluefly/detector.py#L154
https://github.com/APS-USAXS/ipython-usaxs/blob/master/profile_bluesky/startup/usaxs_support/saveFlyData.py