Add feature status to readme (#864)
Add feature status to readme (#864)


open-telemetry/opentelemetry-js,open-telemetry/opentelemetry-js,open-telemetry/opentelemetry-js-contrib,open-telemetry/opentelemetry-js,open-telemetry/opentelemetry-js-contrib,open-telemetry/opentelemetry-js,open-telemetry/opentelemetry-js-contrib,open-telemetry/opentelemetry-js-contrib