Move sentry.io package to packages#28

Merged

kf6gpe merged 2 commits intogetsentry:masterfrom

kf6gpe:move-to-packages

Oct 29, 2018

Commits on Oct 26, 2018

relocate package to packages/sentry prior to merging with flutter/packages repository
kf6gpe
committed
New README.md indicating that this has been deprecated & merged with flutter/packages
kf6gpe
committed