[iip] new commits pushed by r12a

The following commits were just pushed by r12a to https://github.com/w3c/iip:

* Update README  to link to participation roles.
  by r12a
https://github.com/w3c/iip/commit/0b35e4eff66a544d28f2330c01a8f20c7048e7b5

Received on Friday, 1 November 2019 10:08:08 UTC