jonmagic/electric_motor — pull request #1 by jonmagic (2014-07-05 22:05:58+00:00)
Title: Add ElectricMotor

```ruby
motor = ElectricMotor.new
motor.running?
=> false
motor.rpm
=> 0
motor.power(true)
motor.running?
=> true
motor.rpm
=> 1000
motor.power(false)
motor.running?
=> false
motor.rpm
```