A new version has been posted to the Food4Rhino site http://www.food4rhino.com (search for “hummingbird”) This version installs for both Revit 2014 and 2015 (even if you don’t have them on your computer.)
There are some useful documentation and sample files at http://www.whitefeet.com/Tools/ in the Hummingbird – Rhino to Revit Translation section. (You will need to create an account and agree to the license agreement but you can use Hummingbird without buying a WhiteFeet Tools license.)
This update exposed a number of issues that need to be fixed. We are also working on a Revit –> Rhino upload option. So stay tuned for another update.
And keep sending messages and posting stories about what you are doing.