Remove '.jitsuconf' reference from 'config list' usage output.

[swells]

Notice the reference to .jitsuconf in the usage output, it should be replaced with the name:

exports.list.usage = [
  'Lists all configuration values currently',
  'set in the .jitsuconf file',
  '',
  '<app> config list'
];

Assuming I am building a CLI called mycli independent of 'jitsu' that uses 'flatiron-cli-config', for example:

mycli.config.env().file({
    file: '.mycliconf',
    dir: process.env.HOME
});

mycli.use(require('flatiron-cli-config'), {
   ...
});

The CLI creates a .mycliconf file in the user's home directory. I would expect a usage message for config list to show a reference to .mycliconf and not .jitsuconf when I run a help:

$ mycli help config list 

Thanks in advance.