code: function getFile (options) {
    options.hash = _private.getDevHash(options.secret);
    return _private.makeRequest(_getLink(options),
      'Unable to fetch document');
  }
docs: Get translations file form service
  @param  {Object} options
  @param  {Number} options.projectId Project ID
  @param  {String} options.secret Private key to OneSky API
  @param  {String} options.apiKey Public key to OneSky API
  @param  {String} options.language Language to download
  @param  {String} options.fileName File name to download