Added light control. Pin 8 will turn on when the light levels get low (a simple LED can be attached to demonstrate this or a grow LED circuit which accepts a 5v signal).
This pin needs to be changed to a PWM pin if one can be freed up from another component which doesn't use it, then it should dim the LED as well
The threshold at which the light turns on is set to 80 but can be adjusted with the lightControlThreshold variable in LightSensor.cpp