Adding the CC license image to the readme

[SeppPenner]

I think it would be quite cool to add the CC license image to the readme file of the repository.

See https://creativecommons.org/choose/results-one?license_code=by-sa&jurisdiction=&version=3.0&lang=en

This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

[SeppPenner]

image:https://i.creativecommons.org/l/by-sa/3.0/88x31.png[Creative Commons License, title="Creative Commons License"] This work is licensed under a link:https://creativecommons.org/licenses/by-sa/3.0/deed.en[Creative Commons Attribution-ShareAlike 3.0 Unported License].

from https://creativecommons.org/choose/results-one?license_code=by-sa&jurisdiction=&version=3.0&lang=en

[smellai]

you can provide a PR yourself :)

[SeppPenner]

Hi @smellai I have done that for the German repo already. I can provide one for this repo, too.

[SeppPenner]

There it is: #388

When this is merged, we can check if the German repo gets the change notifiation, too.