README: add link to diapo "dup-protocol"

5 jobs for master in 19 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Publish
passed #18697
nodejs
pages

00:00:19

 
  Deploy
passed pages:deploy

00:00:00

passed pages:deploy

00:00:00

passed pages:deploy

00:00:00

passed pages:deploy

00:00:00