Update README + metadata.json for 7.2.0-preview.2#14401

Merged

rjmholt merged 4 commits intoPowerShell:masterfrom

rjmholt:readme-720p2

Dec 16, 2020

Commits on Dec 12, 2020

Update README + metadata.json for 7.2.0-preview.2
rjmholt
committed

Commits on Dec 14, 2020

Update tools/metadata.json
rjmholt
authored

Commits on Dec 15, 2020