Merge pull request #4638 from bbc/update-psammead-repo-readme-decom-W…

…STEAMA-51

Component Migration Info Updates to Psammead Readme [WSTEAMA-51]

packages/README.md

@@ -1,3 +1,9 @@
+# 🚨 --- NO LONGER MAINTAINED ---- Psammead ---- NO LONGER MAINTAINED --- 🚨
+
+We have recently migrated most of our Psammead components (except for BBC Web Vitals) to a [legacy folder](https://github.com/bbc/simorgh/tree/latest/src/app/legacy) in our Single Page Application called [Simorgh](www.github.com/bbc/simorgh).
+
+Any open source contributions to these components should now be made via the Simorgh repo as they are no longer being maintained in the Psammead repo.
+
 # Psammead Packages Directory...
 
 NB all Development Dependencies are in the top level package.json, none are in the packages.