Basic 'hello' command using mozcmd

hello.mozcmd

[
  {
    name: 'hello',
    description: 'Show a message',
    params: [
      {
        name: 'name',
        type: 'string',
        description: 'Who to say hello to',
      }
    ],
    exec: function(args, context) {
      return 'Good morning, ' + args.name;
    }
  }
]