chore(package): update nan to version 2.6.2
chore(package): update nan to version 2.6.2

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EmergingTechnologyAdvisors/node-serialport,voodootikigod/node-serialport,node-serialport/node-serialport,EmergingTechnologyAdvisors/node-serialport,EmergingTechnologyAdvisors/node-serialport,node-serialport/node-serialport,voodootikigod/node-serialport,node-serialport/node-serialport,node-serialport/node-serialport,voodootikigod/node-serialport,node-serialport/node-serialport,voodootikigod/node-serialport,EmergingTechnologyAdvisors/node-serialport,EmergingTechnologyAdvisors/node-serialport