Storybook enhancements

after switching to storybook 5, would be nice to have/look into:
- add markdown usage examples?
  - https://github.com/tuchk4/storybook-readme 
  - https://github.com/storybooks/storybook/tree/master/addons/info 
- live edit? https://github.com/vertexbz/storybook-addon-react-live-edit
- copy code blocks? https://github.com/Pickra/copy-code-block