Add meta.relativePath explicit example (#2106)
Add meta.relativePath explicit example (#2106)

* Add meta.relativePath explicit example

Spent hours to test it to add a relativePath and non unique ids for files with the same name but coming from different folders.

It works like it but it's confusing with the `setMeta` method.

* tweak comment

Co-authored-by: Renée Kooi <2786ced98abafec2d7258a203bf82141215f9e6a@kooi.me>
transloadit/uppy,transloadit/uppy,transloadit/uppy,transloadit/uppy