Update README.md

Author: m0mus

README.md

@@ -1,6 +1,9 @@
 # JSON Processing (JSON-P)
 
-This project has been moved to the Eclipse Foundation:
-https://github.com/eclipse-ee4j/jsonp
+:warning: This project is now part of the EE4J initiative. This repository has been archived as all activities are now happening in the [corresponding Eclipse repository](https://github.com/eclipse-ee4j/jsonp). See [here](https://www.eclipse.org/ee4j/status.php) for the overall EE4J transition status.
 
-This repository is now read only and won't be updated. 
+## Links
+
+- Eclipse Project for JSON Processing: https://projects.eclipse.org/projects/ee4j.jsonp
+- Discussion groups: jsonp-dev@eclipse.org
+- JSR-367 page on JCP site: https://jcp.org/en/jsr/detail?id=374