title: How to run gulp tasks from a node script
body: <p>I have a node script and I want to run a gulp task I have in the same script, how can I call it?</p>
  
  <pre><code>#!/usr/bin/env node
  var gulp = require('gulp');
  gulp.task('default', function (arg) {
  
  });
  
  // How do I call the task 'default'
  </code></pre>