Update README.md

README.md

@@ -1,3 +1,38 @@
 # utility-charge-notifier
 
-Utility script to poll battery state and show a message outside configured thresholds.
+Utility script to poll battery state and show a message outside configured thresholds.
+
+The script is configurable and uses an interval and lower/upper threshold for battery.
+
+The script utilizes libnotify to send a system message when outside the limits - thus ensuring you don't forget to plug or unplug your laptop charger.
+
+## Script
+
+Create the local bin folder
+
+```
+mkdir ~/.local/bin
+```
+
+Copy the main script to your local bin folder
+
+```
+touch ~/.local/bin/charge-notify.sh && chmod +x ~/.local/bin/charge-notify.sh
+```
+
+## Usage
+The battery levels are example levels. 
+Edit the battery levels according to your system and preference. 
+
+## Run script as a user service
+Create user service to to execute the script after startup
+
+Create the folder ~/.config/systemd/user
+```
+mkdir ~/.config/systemd/user
+```
+Copy the service definition `charge-notifier.service` the new folder
+
+```
+systemctl --user enable --now charge-notifier.service
+```