message: ref: Change readme
diff: * `sentry-cli >= 1.9.0` (`brew install getsentry/tools/sentry-cli`)
  With this SDK, Sentry is now able to provide mixed stacktraces. This means that if a JavaScript call causes a crash in native code, you will see the last call from JavaScript before the crash. This also means that with the new SDK, native crashes are properly handled on iOS.
  -Full Android support coming soon but it will gracefully downgrade to use [raven-js](https://github.com/getsentry/raven-js).
  ## Additional device information
  