Bar graph added.

node_modules/vega-loader/index.js

@@ -0,0 +1,22 @@
+import loaderFactory from './src/loader';
+
+export var loader = loaderFactory(
+  require('node-fetch'),
+  require('fs')
+);
+
+export {
+  default as read
+} from './src/read';
+
+export {
+  inferType,
+  inferTypes,
+  typeParsers
+} from './src/type';
+
+export {
+  format,
+  formats,
+  responseType
+} from './src/formats/index';