How to transfer proposal to tc39 org

[gsathya]

cc @ljharb

[ljharb]

The current instructions are listed here: https://github.com/tc39/proposals#onboarding-existing-proposals

I'd prefer this repo to link to that instead of duplicating the content :-)

[gsathya]

I'd prefer this repo to link to that instead of duplicating the content :-)

SGTM.

[littledan]

@bterlson, @littledan, or @leobalter will transfer your repository to the TC39 organization the next chance they get.

The process usually involves someone pinging us (at least the times that I do it). Maybe we should include that as a suggestion.