docs: Add deprecation notice to readme (#1566)

* docs: Add deprecation notice to readme

README.md

@@ -1,9 +1,20 @@
-Part of [Open edX](https://open.edx.org/)
-
-edX Analytics Dashboard [![CoverageStatus](https://img.shields.io/coveralls/edx/edx-analytics-dashboard.svg)](https://coveralls.io/r/edx/edx-analytics-dashboard?branch=master)
+edX Analytics Dashboard
 =======================
 Dashboard to display course analytics to course teams
 
+# DEPRECATION NOTICE
+
+The Insights product and associated repositories are in the process of being 
+deprecated and removed from service. Details on the deprecation status and
+process can be found in the relevant [Github issue](https://github.com/openedx/public-engineering/issues/221).
+
+This repository may be archived and moved to the openedx-unsupported
+Github organization at any time.
+
+The following sections are for historical purposes only.
+
+---
+
 Prerequisites
 -------------
 * Python 3.8.x
@@ -231,20 +242,6 @@ The code in this repository is licensed under version 3 of the AGPL unless other
 
 Please see `LICENSE.txt` for details.
 
-How to Contribute
------------------
-
-Contributions are very welcome, but for legal reasons, you must submit a signed
-[individual contributor's agreement](https://openedx.org/cla)
-before we can accept your contribution. See our
-[CONTRIBUTING](https://github.com/openedx/.github/blob/master/CONTRIBUTING.md)
-file for more information -- it also contains guidelines for how to maintain
-high code quality, which will make your contribution more likely to be accepted.
-
-### JavaScript Code Quality
-JavaScript developers should adhere to the [edX JavaScript standards](https://github.com/openedx/edx-platform/wiki/Javascript-standards-for-the-edx-platform).
-These standards are enforced using [JSHint](http://www.jshint.com/) and [jscs](https://www.npmjs.org/package/jscs).
-
 Testing
 -------
 
@@ -320,9 +317,3 @@ HTTP status codes. Use the command below to execute this script.
 Reporting Security Issues
 -------------------------
 Please do not report security issues in public. Please email security@openedx.org.
-
-
-Mailing List and IRC Channel
-----------------------------
-You can discuss this code on the [edx-code Google Group](https://groups.google.com/forum/#!forum/edx-code) or in the
-`edx-code` IRC channel on Freenode.