message: Fix small copy/paste typo in README
diff: @@ -185,7 +185,7 @@ static args = [
  name: 'file', // name of arg to show in help and reference with args[name]
  required: false, // make the arg required with `required: true`
  description: 'file to output', // help description
  - // hidden: true, // hide this flag from help
  + // hidden: true, // hide this arg from help
  // parse: input => 'output', // instead of the user input, return a differnt value
  // default: 'world', // default value if no arg input
  // options: ['a', 'b'], // only allow input to be from a discrete set
  