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Update Reference.md

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@ -30,9 +30,26 @@ The following **optional** `homeSpan` methods override various HomeSpan initiali
* `void setControlPin(uint8_t pin)`
* sets the ESP32 pin to use for the HomeSpan Control Button. If not specified, HomeSpan will assume there is no Control Button
* `int getControlPin()`
* returns the pin number of the HomeSpan Control Button as set by `setControlPin(pin)`, or -1 if no pin has been set
* `void setStatusPin(uint8_t pin)`
* sets the ESP32 pin to use for the HomeSpan Status LED. If not specified, HomeSpan will assume there is no Status LED
* sets the ESP32 pin to use for the HomeSpan Status LED
* assumes a standard LED will be connected to *pin*
* if neither this method nor `setStatusPixel()` is called, HomeSpan will assume there is no Status LED
* `void setStatusPixel(uint8_t pin, float h=0, float s=100, float v=100)`
* sets the ESP32 pin to use for the HomeSpan Status LED
* assumes an RGB NeoPixel (or equivalent) will be connected to *pin*
* works well with ESP32 boards that have a built-in NeoPixel LED, though adding an external NeoPixel is fine
* users can optionally specify the color HomeSpan will use with the NeoPixel by providing the following HSV values:
* h = Hue from 0-360
* s = Saturation percentage from 0-100
* v = Brightness percentage from 0-100
* color defaults to *red* if unspecified
* example: `homeSpan.setStatusPixel(8,120,100,20)` sets the Status LED to light green using a NeoPixel attached to pin 8
* if neither this method nor `setStatusPin()` is called, HomeSpan will assume there is no Status LED
* `void setStatusAutoOff(uint16_t duration)`
* sets Status LED to automatically turn off after *duration* seconds