Issue updating lexicon in frozen app

[etfre]

I'm running into this error updating the lexicon in an application bundled with cx_Freeze on Windows 10. I tried manually adding all of the kaldi_active_grammar/kaldi/*.py files to the dist as cx_Freeze wasn't picking up modules invoked by utils.ExternalProcess but am still getting the same exception.

[daanzu]

I think this may be related to #54.