Cannot provide custom name for app

[lawrencejones]

Line 404 is where the name of your application is currently guessed. I don't think this is the best way of doing things, or at least we should have an option to set the name of the application much like the description.

If we don't have this, then many apps will end up printing usage: cli.js or whatever the file being run may be, which I think looks pretty rubbish.

Simply adding a method to set the programs name would solve this problem. Making a PR now.

[lawrencejones]

Turns out there was already a getter for the app name, that took a parameter name but didn't do anything with it. Not sure what happened there?

PR should allow custom setting of name in the same way as other standard parameters.

[zhiyelee]

Closed. We can discuss in #293