Changed print() to println()
Added ultrasonic library
Added ultrasonic sensor decleration
Modified code to use the ultrasnic sensor, so that a left_threshold can be used for detectOpening
CHanged some varaible names to be consistent with the decision for variable naming from the begining of hte project
Made the setup start the mouse, then wait for the kill switch
Fixed the *noncompiling code* someone commited *gasp*