Put git tutorial first?

[jradavenport]

Since many people start w/o knowledge of git, it becomes hard by Day 2 to update their local repo/clone

[adrn]

👍

[dhuppenkothen]

We'll run a git tutorial right after lunch

[adrn]

(this is for AHW2018)

[dhuppenkothen]

oops 😳

[davidwhogg]

I think we should -- I think we should even do this first thing on the first day.