docs: add link to EOL blog post and update guidance

- update copyright year

LICENSE

@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2020 Google LLC. https://angularjs.org
+Copyright (c) 2022 Google LLC. https://angularjs.org
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,9 +1,15 @@
-This repository publishes the AngularJS Material v1.x library and localized installs
-using `npm`. You can find the component source-code for this library in the
-[AngularJS Material repository](https://github.com/angular/material).
+# AngularJS Material
+
+**[Support for legacy AngularJS ended on January 1st, 2022](https://goo.gle/angularjs-end-of-life).**
 
-> Please file issues and pull requests against that `angular/material` repository only. Do not file
-issues here on the publishing repository.
+See the following, related, actively supported Angular packages:
+- [`@angular/material`](https://www.npmjs.com/package/@angular/material)
+- [`@angular/cdk`](https://www.npmjs.com/package/@angular/cdk)
+
+This repository was used to publish the AngularJS Material v1.x library and localized installs
+using `npm`. You can find the component source-code for this library in the
+[AngularJS Material repository](https://github.com/angular/material). This package and related repositories
+has reached End-of-Life.
 
 ## Layouts and SCSS