README changes

Author: lfrancke

README.md

@@ -1,5 +1,12 @@
 # Stackable Group Mapper for Apache Hadoop
 
+[Stackable Data Platform](https://stackable.tech/) | [Platform Docs](https://docs.stackable.tech/) | [Discussions](https://github.com/orgs/stackabletech/discussions) | [Discord](https://discord.gg/7kZ3BNnCAF)
+
+This projects is a plugin for Apache Hadoop, which can look up groups for users in an OpenPolicyAgent (OPA) instance.
+It is intended to be used with the [Stackable Data Platform](https://stackable.tech) 
+
+## Description
+
 HDFS internally uses user groups for group permissions on folders etc. For this reason it is not enough to just have the groups in OPA during authorization, but they actually need to be available to Hadoop. Hadoop offers a few default group providers, such as:
 
 * LDAP