update README with links to Kubernetes, DataDog, Sentry and Papertrail dashboards
update README with links to Kubernetes, DataDog, Sentry and Papertrail dashboards

mzikherman/metaphysics-1,mzikherman/metaphysics-1,artsy/metaphysics,mzikherman/metaphysics-1,artsy/metaphysics,artsy/metaphysics,mzikherman/metaphysics-1