Load option

[rejeep]

With this change, you can add common code to to ~/.jku.js, so you don't have to write it every time.

For example:

global.prettyDate = function(timestamp) {
  return new Date(timestamp).toISOString().substring(0, 10);
};

global.uglyDate = function(timestamp) {
  return new Date(timestamp).toISOString().split('').reverse().join('');
};

You can also require any file with --require/-r.

[rejeep]

Cleaning up