fix constructor Error replaced with new sp(device, options)

[malekbenz]

SerialPort don't conatin any sp.SerialPort contructor (module.exports = SerialPort;)
so this line:
modem.port = new sp.SerialPort(device, options);
should be replace with :
modem.port = new sp(device, options);

[adhisimon]

I confirm @malekbenz patch solve my problem

[mckoy03]

Hi,

what version of Node/npm you use? I can't seem to make it work on my environment. TIA

[jay-ike]

Sorry but according to the API SerialPort the constructor of serialport is :
SerialPort({path,...})