def add(name, address)
      device = Device.new(name: name, address: address)
      self << device
      device
    end
def add(name, address)
      device = Device.new(name: name, address: address)
      self << device
      device
    end
Public: Adds a device to the pool

 name    - The name of the device
 address - The address of the device

 Returns nothing