QString FileSystem::readFileSync(QString filename) {
  // mimics http://nodejs.org/docs/v0.4.8/api/fs.html#fs.readFileSync


  QFile file(filename);

  if (!file.open(QIODevice::ReadOnly)) {
    // TODO: throw exception
    return "";
  }

  QTextStream stream ( &file );
  QString data = stream.readAll();
  file.close();

  return data;

}