Don't use GoogleDrive in Modal yet as it still needs some work. Fixes #64

Correct @arturi @hedgerh ?

website/src/examples/modal/app.es6

@@ -6,10 +6,9 @@ const uppy = new Uppy({debug: true})
 uppy
   .use(Modal, {trigger: '#uppyModalOpener'})
   .use(Dummy, {target: Modal})
-  .use(GoogleDrive, {target: Modal})
+  // .use(GoogleDrive, {target: Modal})
   .use(ProgressBar, {target: Modal})
   .use(DragDrop, {target: Modal})
   .use(Present, {target: Modal})
   .use(Tus10, {endpoint: 'http://master.tus.io:8080/files/'})
-  // .use(GoogleDrive, {target: Modal})
   .run()