Creator here - I ported this over from the open-source Julius using emscripten. AMA
In my time using offline speech-recognition tech, I never was able to use julius properly (docs were a little lacking) so I jumped on to CMUSphinx/pocketsphinx, but I think you've just done a huge amount of work to bring Julius out of obscurity (at least in my mind). Thanks very much
[EDIT] - I really can't get across enough how awesome this is, please add a gittip link or bitcoin address or something