added post install config

Author: sundaram2021

apache-superset/post_install.md

@@ -0,0 +1,17 @@
+
+## Apache Superset Installed!
+
+You have successfully installed Apache Superset on your Kubernetes cluster.
+
+### Next Steps:
+1. **Access Superset**: Visit the Superset UI through the provided Ingress URL or LoadBalancer IP.
+2. **Default Credentials**:
+   - Username: `admin`
+   - Password: `admin`
+   Please change your credentials after the first login.
+
+3. **Database Setup**: Connect Superset to your data sources by navigating to **Data > Databases** and following the setup instructions.
+
+### Learn More:
+For detailed documentation, visit [Superset Documentation](https://superset.apache.org/docs).
+