Update readme.md

Signed-off-by: mzico <mohib@gluu.org>

Server/integrations/casa_external_user/readme.md

@@ -7,5 +7,16 @@ This script integrate basic_multi_auth ( https://github.com/GluuFederation/oxAut
  - This feature is only available from 4.5 and above.
  - We need new CASA war to use this script for now:
    - Download war: https://maven.gluu.org/maven/org/gluu/casa/4.5.4.Final/casa-4.5.4.Final.war
-   - Update your server with this war. 
+   - Update your server with this war.
+   - Append new java parameter ( "-Dadmin.lock=/opt/gluu/jetty/casa/.administrable") in `/etc/default/casa`:
+     - `JAVA_OPTIONS="-server -Xms128m -Xmx846m -XX:+DisableExplicitGC -Dgluu.base=/etc/gluu -Dserver.base=/opt/gluu/jetty/casa -Dlog.base=/opt/gluu/jetty/casa -Dadmin.lock=/opt/gluu/jetty/casa/.administrable"`
+   - Restart oxauth, identity and casa service
  - Use attached script in Person Authentication Script. 
+
+## If SuperGluu....
+
+If you want to use SuperGluu in this whole setup, you have to: 
+
+ - Download SG script from here ( https://raw.githubusercontent.com/GluuFederation/community-edition-setup/version_4.5.4/static/casa/scripts/casa-external_super_gluu.py ) and copy it inside `/opt/gluu/python/lib`
+ - Make sure to change permission to "jetty:gluu"
+ - Restart oxauth service.