code: function addGitIgnore(rootFolder) {
  
      // If no .gitignore files exists, add one
      const gitignore = path.join(rootFolder, '.gitignore');
      if (!fs.existsSync(gitignore)) {
          fs.writeFileSync(gitignore, gitignoreContent);
      }
  }
docs: Add a gitignore file if none is present yet
  
  @param {String} rootFolder - Folder to add .gitignore in
  @returns {void}