[W] Mention new gitter channel (#22974)
* Mention new gitter channel * Update CONTRIBUTING.md
I
Ian Hickson committed
2f630446040b9f5b65fbfff9a76be1fe01c45e99
Parent: 5343bd8
Committed by GitHub <noreply@github.com>
on 10/25/2018, 10:40:35 PM