Updated readme.

README.md

@@ -97,8 +97,11 @@ To view the json-ld manifests created for each resources of Omeka S, simply try
 these urls (replace :id by a true id):
 
 - https://example.org/iiif/collection/:id for item sets;
-- https://example.org/iiif/collection/:id,:id,:id,:id… for multiple resources;
+- https://example.org/iiif/collection/:id,:id,:id,:id… for multiple resources (deprecated: use /set below);
 - https://example.org/iiif/:id/manifest for items;
+- https://example.org/iiif/set?id[]=:id,:id[]=:id,id[]=:id,id[]=:id…;
+- https://example.org/iiif/set/:id,:id,:id,:id is supported too;
+
 - https://example.org/iiif-img/:id/info.json for images files;
 - https://example.org/iiif-img/:id/:region/:size/:rotation/:quality.:format for
   images, for example: https://example.org/iiif-img/1/full/full/270/gray.png;