lib/utils.js
function debug (gt) {
  var args = arrayify(arguments);
  args.splice(0, 1); // Pop first `gt` argument
  if (gt.get('debug'))
    console.log.apply(console, ['GhostTrain debug: '].concat(args));
}
function debug (gt) {
  var args = arrayify(arguments);
  args.splice(0, 1); // Pop first `gt` argument
  if (gt.get('debug'))
    console.log.apply(console, ['GhostTrain debug: '].concat(args));
}
Prints out debugging to console if `ghosttrain.get('debug')` is true

@param {GhostTrain} gt
@param {String} out