New section: exercises intro

[frankier]

There could be a section either as part of this section, or straight after. It would consist of two things:

1. Make a directory structure for the workshop (typealong: revise basic command line tools a tiny bit and show how to use tree to see the results)
2. Run the verification script Verification bash script installation#218

[samumantha]

Thank you for these suggestions, very good points !

1. is now added as a suggestion to intro.
   This could be shown before first exercise on own computer, @bast?
2. verfication script has been removed, as week 2 is now demo only. But verification for github config should probably be shown during lesson @bast

[bast]

I will hopefully not forget to show it but please make it part of the intro section to lower the probability that we never mention it.

[bast]

Another reason why it's better in intro and not lesson: some people will only create something on their laptop on day 2. Some on day 1. Day 1 is designed that one can go through it on web only.

[samumantha]

Ok, but does it need to be a walkthrough?
Or is "create a directory for this workshop" and then leave them a few minutes to do so enough?
Since command line is not a must anymore for first days, it could give wrong impression to participants to show it on command line?

[bast]

Ye, no walkthrough needed. Just a recommendation to create it somehow.