completed documentation

README.md

@@ -563,6 +563,16 @@ This role provides base for a PHP installation.
     * Use this option to install all needed extensions.
   * default: []
 
+* php_default_user
+  * description:
+    * A default user for PHP and its subroles.
+  * default: "daemon"
+
+* php_default_group
+  * description:
+    * A default group for PHP and its subroles.
+  * default: "daemon"
+
 ## Processes
 
 ### main