code: function parseAll(options) {
    return Promise.all([
      parseData(options),
      parsePages(options),
      parsePatterns(options),
      parseTemplates(options)
    ]).then(
      allData => parseTree(allData, options),
      error => DrizzleError.error(error, options.debug)
    );
  }
docs: Parse files with data from src and build a drizzleData object
  @param {Object} options
  @return {Promise} resolving to Drizzle data object