setup:

apt-get install libpcap
npm install

start:

sudo node scan.js --eth wlan0 --gateway 192.168.1.1 --start no

// Change "wlan0" to your network interface name
// Change "192.168.1.1" to IP of router (`route -n` to check)

access Web UI:

http://localhost:8083

start Electron UI:

npm run rebuild_electron
sudo npm run --eth=wlan0 --gateway=192.168.178.1 start_electron
// to go back to the non-electron version you will have to rebuild node_modules:
// npm run rebuild_node