Please update README.md

[CWiswell-IDM]

Not sure what we need in here but...

Maybe "getting permissions to the DGX machine"
Maybe "getting into the Docker group to nrunx this stuff"

[jonathanhhb]

Ya, I'll take the latest which is at https://github.com/InstituteforDiseaseModeling/dda-socialmapping/issues/8 and then also add the other items found.

I think DGX perms are OK because it uses central auth.