One thing a lot of libraries in machine learning miss out are proper full-scale examples. Nodejs is a part of the web community and the web community I can say aren't the best of programmers. So simple impossible-to-not-understand examples would make this library go very far.
Perhaps you meant this however as part of the better documentation though.
I also have a request for how to install this from scratch. I'm guessing one must install the TensorFlow C API, then install this? Or will this node module install that also (which would be awesome).