docs: function downloadInstaller(cb) {
    const url = win ?
      'https://ibm.biz/yeoman-idt-win-install' :
      'http://ibm.biz/yeoman-idt-install';
  
    const fileName = url.split('/').pop()
  
    console.log(chalk.blue('Downloading installer from:'), url);
  
    const file = fs.createWriteStream(fileName);
  
    request
      .get({url, followAllRedirects: true})
      .on('error', (err) => { console.error(err); })
      .pipe(file)
      .on('finish', () => runInstaller(fileName, cb));
  }