trouble with Rotor::Stepper::WPI_MODE_GPIO

[andrewpatterson3001]

When I try to instantiate a new Stepper with

stepper_x = Rotor::Stepper.new(7,11,13,15,nil,nil,0,157.48)

I get

NameError: uninitialized constant Rotor::Stepper::WPI_MODE_GPIO

I noticed that the gem 'wiringpi' has been updated in the past year to 'wiringpi2'(different gem for some reason). I'm not sure if this is a problem with wiringpi or its use in rotor. Do you have any advice? Is this project currently being maintained? I'm happy to help in any way I can.