code: function getEmailTemplateHTMLString(options) {
    return new Promise((resolve, reject) => {
      try {
        fs.readFile(options.emailtemplatefilepath, 'utf8', (err, file) => {
          if (err) {
            reject(err);
          } else {
            resolve(file);
          }
        });
      } catch (e) {
        reject(e);
      }
    });
  }
docs: reads a filepath and returns the email template string (will use EJS to render later by default)
  @param {object} options options object, requires an emailtemplatefilepath property
  @param {string} options.emailtemplatefilepath file path to email template
  @returns {promise} resolves the contents of the passed filepath with the contents of the file as a utf8 string