Added comment to web interface installation script for removing a user from a group

web_interface/install_dfall_server_WIP.sh

@@ -12,7 +12,7 @@ sudo -u www-data git clone https://...
 # Add the necessary line to the "/etc/sudoers" file
 # that allows the "www-data" user to execute
 # "git pull" commands
-www-data ALL=(www-data) /usr/bin/git pull
+# >> www-data ALL=(www-data) /usr/bin/git pull
 
 # Add the "www-data" user to the "plugdev" group
 # NOTE: this is the group nominated in the udev
@@ -23,7 +23,11 @@ www-data ALL=(www-data) /usr/bin/git pull
 sudo usermod -a -G plugdev www-data
 
 # To confirm the group allocation, view the file:
-less /etc/group
+# >> less /etc/group
+
+# If you need to remove a user from a group, then:
+# SYNTAX: >> deluser <username> <groupname>
+# >> deluser www-data plugdev