Add demos for online UIs?

[deeplook]

I've hacked a quick online UI prototype for svg2pdf with streamlit.io. It's only ca. 70 lines of code, see this gist. While streamlit.io has its pro's and con's, other frameworks would also be possible, think Jupyter notebooks. So the question is, I guess, should we add such things as mini demos perhaps, to the code base, and how?

https://user-images.githubusercontent.com/1001778/104837714-b17d4080-58b6-11eb-8661-c8b9fffddcdc.mov

[claudep]

Cool! Feel free to dedicate a subdirectory to such examples.