code: function copyFiles (inSrc, outSrc, files) {
  	return new Promise((res, rej) => {
  		for (const file of files) {
  			copySync(`./${inSrc}/${file}`, `./${outSrc}/${file}`);
  		}
  		res();
  	});
  }
docs: Copies an array of files.
  @param inSrc
  @param outSrc
  @param files
  @returns {Promise<void>}