User docs improvements ideas

• State the minimum Python version in the README (cf. #208)
• State the operating system under which the script is supposed to work => the Makefile can only be used with a bash. Alternative way? (cf. #209)
• If you support both pip and pipenv, please provide running instructions without pipenv as well. Maybe poetry would be a better fit?
• Please provide a working example including the expected results (images etc.). In addition, one could check the example in the CI build as well. (cf. #210)

changed the description

added Enhancement::Docs label

Note: We have switched to poetry in the meantime.

@hueser93 could you please split this int dedicated issues for easier handling?

added Priority::Normal label

assigned to @hueser93

changed milestone to %DevDays 06/2022

marked this issue as related to #137

mentioned in issue #208

mentioned in issue #209

changed the description

mentioned in issue #210

changed the description

mentioned in issue #107