License file missing

[fpreiss]

Hi @rlancemartin,

Thanks a lot for the comprehensive walkthrough. I'd like to show some of the content in a talk I'm preparing at the moment, but could not find any information on the license. Could you provide a license file or absent of this give some information under which conditions it is possible for me to showcase content from the repository?

[os1ma]

This repository has been incredibly helpful. A license would certainly make it easier for us to use and contribute to this great project.