Changed listMajors function

outputEmployeeHTML.js

function outputEmployeeHTML(no, name, title, email) {
  // If encoding(second parameter) is not specified, readFile outputs Buffer
  fs.readFile('./email-template.html', "utf8", (err, html) => {
    if(err) console.log(err);

    let employeeHTML = html;
    const employeeData = {
      '{NAME}': name,
      '{TITLE}': title,
      '{EMAIL}': email
    };
    employeeHTML = employeeHTML.replace(/{NAME}|{TITLE}|{EMAIL}/gi, function(matched){
      return employeeData[matched];
    });

    const signaturesDirectory = './signatures';

    if (!fs.existsSync(signaturesDirectory)){
      fs.mkdirSync(signaturesDirectory);
    }

    if(no !== undefined) {
      fs.writeFile(`${signaturesDirectory}/${no}.html`, employeeHTML, 'utf8', (err) => {
        if(err) throw err;
        console.log(`File ${no} is saved.`);
      });
    }
  });
}