message: Capitalize string
diff: import { each } from 'underscore';
  +import { capitalize } from 'underscore.string';
  module.exports = (errors) => {
  const errorObject = {};
  if (errors.graphQLErrors) {
  each(errors.graphQLErrors, (error) => {
  - errorObject[error.extensions && error.extensions.attribute] = error.message;
  + errorObject[error.extensions && error.extensions.attribute] = capitalize(error.message, true);
  });
  }
  return errorObject;
  