added documentation for fixIcueBrightness

Author: Legion2

README.md

@@ -139,6 +139,17 @@ Then the third argument of the `scale` function is `144`.
 For both functions it's **important**, that the CRGB arrays have at least the length of the physical LED strip.
 This means if your LED channel from iCUE has 50 LEDs and you use the `repeat` function to control 100 physical LEDs you MUST declare the CRGB array at least with a length of 100.
 
+## Increase the Brightness of the LEDs
+By default iCUE only uses 50% of the LEDs brightness even if you set the brightness to max in the iCUE Device Settings.
+But there are good news, we can increase the brightness with the Arduino so we can use the full brightness of our LEDs.
+Add the `CLP::fixIcueBrightness` function to the `onUpdateHook` in the setup function as shown in the [example](examples/AdditionalFeatures/AdditionalFeatures.ino).
+If there are multiple functions called in `onUpdateHook`, `fixIcueBrightness` should be the first.
+```C++
+ledController.onUpdateHook(0, []() {
+	CLP::fixIcueBrightness(&ledController, 0);
+});
+```
+
 # License
 This project is licensed under the Apache 2.0 License.