yes, ws --qr would be a useful feature. 👍

Which URL should the QR encode? When you run ws, three URLs are printed: the hostname, local IP and one or more network interface IP addresses.

$ ws
Listening on http://mba4.local:8000, http://127.0.0.1:8000, http://192.168.0.200:8000

Which of these URLs should the QR represent? We need to pass in an argument which identifies which URL to display as QR.

$ ws --qr en0
<print QR code for network interface with name 'en0'>

Please implement in lws. You'll need to update the built-in cli-view.

Clone the latest lws code.
Add a list-network-interfaces option here. Make it a boolean flag. OptionDefinition objects are documented here.
At this point, if config.listNetworkInterfaces is set, print value (the address list) to the console so the user can see the network interface names.
Next, add a qr option definition here with type String. The value passed to --vr should be an interface name (the user will first run ws --list-network-interfaces to see the interface names).
At this point, check if config.vr is set. If so, search value (an array of objects) for the object with a name matching the supplied config.vr value. Print a QR code for this object's url value.

Add option to display the URL as a QR code #148

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