message: include cookies to the graphql query requests
diff: @@ -1233,6 +1233,7 @@ export class Playground extends React.PureComponent<Props & DocsState, State> {
  // tslint:disable-line
  method: 'post',
  headers,
  + credentials: 'include',
  body: JSON.stringify(graphQLParams),
  }).then(response => {
  if (typeof this.props.onSuccess === 'function') {
  