scaffold does not support over ride

[GMerakis]

right now it's only callable from command line.
This does not play nicely with scaling and calling from scripts.

[DasDominus]

I needed to run these conversions in large scale and in my scripts.
Found that directly changing source & call from code is easier than docker (where I need to spin up subproccess)

I created a fork to customize for my non-docker needs.
I see no need for it right now, but once done I'll write a doc for non-docker walk-through also
https://github.com/DasDominus/NonDocker_Dcm2Bids

[arnaudbore]

@DasDominus, I encourage you to submit a PR if you have ideas to improve dcm2bids.
That will help the dcm2bids community.