README updates: link to Community page, drop obsolete info, etc (#15)

Author: chalin

README.md

@@ -1,25 +1,14 @@
-# grpc-community
+# Welcome to the gRPC community
 
-Welcome to the gRPC community. Please see our [governance](https://github.com/grpc/grpc-community/blob/master/governance.md)
-and [contribution](https://github.com/grpc/grpc-community/blob/master/CONTRIBUTING.md)
-guidelines for gRPC organization.
+For a comprehensive list of **gRPC community resources**, visit our [Community][] page on
+[grpc.io][].
 
-[gRPC ecosystem](https://github.com/grpc-ecosystem) is the organization where we are curating
-repositories of community contributions around gRPC. If you are interested, please see
-details [here](https://github.com/grpc/grpc-community/blob/master/grpc_ecosystem.md).
-
-# Known useful contributions around github
-
-- [gRPC gateway](https://github.com/gengo/grpc-gateway)
-- [Polyglot](https://github.com/grpc-ecosystem/polyglot)
-- [Zipkin Support for gRPC](https://github.com/openzipkin/brave/tree/master/brave-grpc)
-- [Prometheus monitoring for gRPC Go](https://github.com/mwitkow/go-grpc-prometheus)
-- [Flatbuffer support for gRPC C++](https://github.com/google/flatbuffers/tree/master/grpc)
-- [Go Kit with gRPC as transport](https://github.com/go-kit/kit/tree/master/transport/grpc)
-- [Stackdriver Trace Support for gRPC Go](https://godoc.org/cloud.google.com/go/trace)
-- [grpc-java-contrib](https://github.com/salesforce/grpc-java-contrib)
-- [grpc-errors](https://github.com/avinassh/grpc-errors)
-
-# Issues where we would like help from the community
-- [gRPC core](https://github.com/grpc/grpc/labels/help%20wanted)
+This repository holds documents and resources shared across the [gRPC
+organization][] — in particular, the organization's [governance][] rules
+and [contribution][] guidelines.
 
+[Community]: https://grpc.io/community/
+[contribution]: CONTRIBUTING.md
+[governance]: governance.md
+[gRPC organization]: https://github.com/grpc
+[grpc.io]: https://grpc.io/