code: function readAsync(resource) {
    return fs.readFile(resource).then(body => {
      const mimeType = mime.getType(resource);
  
      debug('Fetched:', resource);
  
      return Bluebird.resolve({
        contents: body,
        path: resource,
        mime: mimeType
      });
    });
  }
docs: Get local resource
  @param {string} resource Resource to be fetched
  @returns {Promise} Promise