docs: function customize () {
    var q1 = {
      name: 'title',
      message: 'What is your scene\'s title? (e.g., Forest Scene)',
      type: 'input',
      default: 'aframe-boilerplate'
    };
  
    var q2 = {
      name: 'handControls',
      message: 'Do you want tracked controls with hand models?',
      type: 'confirm',
      default: false
    };
  
    // Go.
    return new Promise(function (resolve) {
      inquirer.prompt([q1, q2]).then(function (answers) {
        // Slugify.
        answers.shortTitle = answers.title.toLowerCase().replace(/\s+/g, '-'
  );
        run(answers)
        resolve(answers.shortTitle);
      });
    });
  
    /**
     * Do all the string replacements.
     */
    function run (answers) {
      answers.aframeVersion = aframeVersion;
      ls(['index.html', 'package.json', 'README.md']).forEach(function (file) {
        fs.writeFileSync(file, nunjucks.render(file, answers));
      });
    }
  }