Purpose of towncrier can be confusing (manual statusboard, no auto monitoring)

[wvanhed]

I think the description (in the README.md file) can be improvement a little bit.

• only after I got it working, I realized that Towncrier is a manual status board. Originally, I incorrectly thought Towncrier performed monitoring and reporting of a number of services (which are being queried using curl as configured in the fixtures.sh file)
• consequently, I though fixtures.sh was a sort of config script to define the urls for the monitored services. Instead, it is a script meant to be run on the host (running it in the docker itself is rather impractical) to call the REST api of Towncrier to add services etc. Specifying under 'First run' that the fixtures.sh script is to be run from the host, would make this clearer I think.