download models_v06.zip during astrodash install

[heather999]

Hi,
I'm installing astrodash in a shared software installation. When running a simple test, I see there is a data file that is downloaded. Is there a suggested way to handle this during the installation process rather than waiting for the need of this file to trigger the download?

 python classify.py -h
Downloading data files from https://github.com/daniel-muthukrishna/astrodash/blob/master/astrodash/models_v06.zip?raw=true... 
This download contains the Tensorflow models trained using deep learning. 
The file to be downloaded is ~200MB. However, this is a one time download, and will only occur
the very first time that this version of DASH is installed.