enhance documentatiom

README.md

@@ -10,7 +10,15 @@ Ansible role to install samba.
 ## Role Variables
 
 ```yaml
-...
+this role install samba and have some specific cutomization if the domain name is PSS
+
+it can download some windows packages file from artifactory to allow PSS windows Dev. machine to install these software using the pss NAS server:
+pss_nas_software_repo_url: https://artifactory.esss.lu.se/artifactory/list/PSS-Softwares/
+pss_nas_software_files:
+  - test.zip
+
+
+
 ```
 
 ## Example Playbook