v1.0.8 compile error (with pin_switch)

Having a compile error, listed below, any ideas?

Arduino: 1.8.5 (Windows 10), Board: “Generic ESP8266 Module, 80 MHz, 40MHz, DIO, 115200, 4M (1M SPIFFS), ck, Disabled, None”

In file included from C:\Users\David\Downloads\OpenGarage 1.0.8\OpenGarage\examples\ogMainArduino\ogMainArduino.ino:30:0:

C:\Users\David\Downloads\arduino_og\portable\sketchbook\libraries\OpenGarage/OpenGarage.h: In static member function ‘static unsigned char OpenGarage::get_switch()’:

C:\Users\David\Downloads\arduino_og\portable\sketchbook\libraries\OpenGarage/OpenGarage.h:60:49: error: ‘PIN_SWITCH’ was not declared in this scope

static byte get_switch() { return digitalRead(PIN_SWITCH); }

^

exit status 1
Error compiling for board Generic ESP8266 Module.

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