Add deprecation notice (#3917)

* Add deprecation notice

* remove CircleCI

* update CODEOWNERS

---------

Co-authored-by: “LappleApples” <“[email protected]”>
Co-authored-by: Ciaran Moran <[email protected]>

Author: 3 people

.circleci/config.yml

@@ -2,4 +2,4 @@
 # Each line is a file pattern followed by one or more owners.
 
 # These owners will be the default owners for everything in the repo.
-*	@bboreham @fbarl @satyamz @qiell
+*	@bboreham

.github/CODEOWNERS

@@ -1,4 +1,4 @@
-# Weave Scope - Troubleshooting & Monitoring for Docker & Kubernetes
+# DEPRECATED: Weave Scope - Troubleshooting & Monitoring for Docker & Kubernetes
 
 [![Circle CI](https://circleci.com/gh/weaveworks/scope/tree/master.svg?style=shield)](https://circleci.com/gh/weaveworks/scope/tree/master)
 [![Coverage Status](https://coveralls.io/repos/weaveworks/scope/badge.svg)](https://coveralls.io/r/weaveworks/scope)
@@ -7,6 +7,8 @@
 [![GoDoc](https://godoc.org/github.com/weaveworks/scope?status.svg)](https://godoc.org/github.com/weaveworks/scope)
 [![Good first issues](https://img.shields.io/github/issues/weaveworks/scope/good-first-issue.svg?color=blueviolet&label=good%20first%20issues)](https://github.com/weaveworks/scope/issues?q=is%3Aissue+is%3Aopen+label%3Agood-first-issue)
 
+## PLEASE NOTE, THIS PROJECT IS NO LONGER MAINTAINED. More details [available here](https://www.weave.works/blog/weave-cloud-end-of-service).
+
 Weave Scope automatically generates a map of your application, enabling you to
 intuitively understand, monitor, and control your containerized, microservices-based application.