Re: README: Add some details of submission mirroring (#4532)

# Firefox #
Testing revision 5b7b0e815521883151cdc70ff7c47e1372cc8575
Starting 10 test iterations
No tests run.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/4532#issuecomment-272200522

Received on Thursday, 12 January 2017 17:37:38 UTC