docs: mention low resource focus

Author: Lken-cmd

README.md

@@ -1,8 +1,8 @@
 # SuperLightBattery
 
-A tiny Windows battery indicator for the Logitech PRO X Superlight, no G HUB, no service, no telemetry.
+A tiny Windows battery indicator for the Logitech PRO X Superlight, built with a focus on low resource usage. No G HUB, no service, no telemetry.
 
-SuperLightBattery shows the battery level of an original Logitech PRO X Superlight in the system tray. Small native binaries, statically linked, no background framework. Tested on Windows 11.
+SuperLightBattery shows the battery level of an original Logitech PRO X Superlight in the system tray. Small native binaries, statically linked, no background framework, and no background polling. Tested on Windows 11.
 
 ## Compatibility