TAC Sign-off on SCI WG Charter

[melba-lopez]

Chair or co-chair to present SCI WG Charter to the TAC in the next few weeks.

Obtain approval from TAC by end of July.

it might be useful to indicate when we expect this to happen, both to keep us (SCI WG) accountable and to help readers understand if this is out of date :-)

Originally posted by @joshuagl in #60 (comment)