QTree-app

would be nice to have access to Images service like in [python](https://cloud.google.com/appengine/docs/standard/python/refdocs/google.appengine.api.images). specifically looking to get a servingUrl. see [here](https://github.com/googlearchive/appengine-nodejs/issues/37). thanks!

with it being a very cool feature, i find in my case that i need the clustering but i have no need for the spiral/spiderifying. currently forked and added this...