Documentation is needed for AR support

See title.

Hey there! We’re currently working on the API and expect a few more changes to hit in 4,19, hence the lack of official docs (as we’d just be tossing them come early 2018.) We’ve got other learning resources in motion right now, and I’ll be covering how to get started with then ARSample this Thursday the 9th on Twitch (announce not yet posted but will be soon!)