Competing in the http://www.realityvirtuallyhack.com VR hackathon at MIT this weekend, I figured out how to get Revit elements into A-Frame for WebVR.
Descriptive story at http://truevis.com/export-from-revit-to-a-frame
Current code: meshout.dyn (52.4 KB)
See it live at http://careless-bulb.surge.sh
The method is nascent. Perhaps y’all will want to develop this further.