message: Changed default method to post
diff: @@ -38,7 +38,7 @@ export function requestIntrospectionQuery(options: RequestSetup) {
  return new Promise<GraphQLSchema>((resolve, reject) => {
  const uri = parse(options.url);
  - const { method } = options;
  + const { method = 'POST' } = options;
  const { hostname, protocol, path } = uri;
  const port = uri.port && Number.parseInt(uri.port, 10);
  const reqParam = { hostname, protocol, path, port, headers, method };
  