adding a doc for auth reload message (#1654)

Author: tulinkry

tools/Messages

@@ -55,13 +55,16 @@ Usage()
     echo "                      Requires input file as argument."
     echo "       - \"getconf\"  retrieves configuration from webapp."
     echo "                      Prints the configuration in XML to stdout."
+    echo "     - or as a <tag>:"
     echo "       - \"set\"      sets the particular configuration option (only primitive types)"
     echo "                    in the webapp."
     echo "                      Examples:"
     echo "                          histPerPage = 10"
     echo "                          authorizationWatchdogEnabled = true"
     echo "                      Returns text describing the action."
     echo "                      The change is NOT persistent when reindex or redeploy!"
+    echo "       - \"auth\"     tag requires \"reload\" text and"
+    echo "                    reloads all authorization plugins."
     echo "    normal:"
     echo "     - assign a <text> to the main page or a project"
     echo "     - can be more precise with <tags> (for specific project)"