Add file_selector to the repo list (flutter#4395)

Author: stuartmorgan

README.md

@@ -44,6 +44,7 @@ These are the available plugins in this repository.
 |--------|-----|--------|------------|-------|
 | [camera](./packages/camera/) | [![pub package](https://img.shields.io/pub/v/camera.svg)](https://pub.dev/packages/camera) | [![pub points](https://badges.bar/camera/pub%20points)](https://pub.dev/packages/camera/score) | [![popularity](https://badges.bar/camera/popularity)](https://pub.dev/packages/camera/score) | [![likes](https://badges.bar/camera/likes)](https://pub.dev/packages/camera/score) |
 | [espresso](./packages/espresso/) | [![pub package](https://img.shields.io/pub/v/espresso.svg)](https://pub.dev/packages/espresso) | [![pub points](https://badges.bar/espresso/pub%20points)](https://pub.dev/packages/espresso/score) | [![popularity](https://badges.bar/espresso/popularity)](https://pub.dev/packages/espresso/score) | [![likes](https://badges.bar/espresso/likes)](https://pub.dev/packages/espresso/score) |
+| [file_selector](./packages/file_selector/) | [![pub package](https://img.shields.io/pub/v/file_selector.svg)](https://pub.dev/packages/file_selector) | [![pub points](https://badges.bar/file_selector/pub%20points)](https://pub.dev/packages/file_selector/score) | [![popularity](https://badges.bar/file_selector/popularity)](https://pub.dev/packages/file_selector/score) | [![likes](https://badges.bar/file_selector/likes)](https://pub.dev/packages/file_selector/score) |
 | [flutter_plugin_android_lifecycle](./packages/flutter_plugin_android_lifecycle/) | [![pub package](https://img.shields.io/pub/v/flutter_plugin_android_lifecycle.svg)](https://pub.dev/packages/flutter_plugin_android_lifecycle) | [![pub points](https://badges.bar/flutter_plugin_android_lifecycle/pub%20points)](https://pub.dev/packages/flutter_plugin_android_lifecycle/score) | [![popularity](https://badges.bar/flutter_plugin_android_lifecycle/popularity)](https://pub.dev/packages/flutter_plugin_android_lifecycle/score) | [![likes](https://badges.bar/flutter_plugin_android_lifecycle/likes)](https://pub.dev/packages/flutter_plugin_android_lifecycle/score) |
 | [google_maps_flutter](./packages/google_maps_flutter) | [![pub package](https://img.shields.io/pub/v/google_maps_flutter.svg)](https://pub.dev/packages/google_maps_flutter) | [![pub points](https://badges.bar/google_maps_flutter/pub%20points)](https://pub.dev/packages/google_maps_flutter/score) | [![popularity](https://badges.bar/google_maps_flutter/popularity)](https://pub.dev/packages/google_maps_flutter/score) | [![likes](https://badges.bar/google_maps_flutter/likes)](https://pub.dev/packages/google_maps_flutter/score) |
 | [google_sign_in](./packages/google_sign_in/) | [![pub package](https://img.shields.io/pub/v/google_sign_in.svg)](https://pub.dev/packages/google_sign_in) | [![pub points](https://badges.bar/google_sign_in/pub%20points)](https://pub.dev/packages/google_sign_in/score) | [![popularity](https://badges.bar/google_sign_in/popularity)](https://pub.dev/packages/google_sign_in/score) | [![likes](https://badges.bar/google_sign_in/likes)](https://pub.dev/packages/google_sign_in/score) |