Update README.md (#1764)

Update link references from `flutter.io` and `pub.dartlang.org` to `flutter.dev` and `pub.dev`
diff --git a/README.md b/README.md
index 4d401a7..2e0d345 100644
--- a/README.md
+++ b/README.md
@@ -9,10 +9,10 @@
 
 Flutter plugins enable access to platform-specific APIs. For more information
 about plugins, and how to use them, see
-[https://flutter.io/platform-plugins/](https://flutter.io/platform-plugins/).
+[https://flutter.dev/platform-plugins/](https://flutter.dev/platform-plugins/).
 
 These plugins are also available on
-[pub](https://pub.dartlang.org/flutter/plugins).
+[pub](https://pub.dev/flutter/packages).
 
 ## Issues
 
@@ -22,12 +22,12 @@
 ## Contributing
 
 If you wish to contribute a new plugin to the Flutter ecosystem, please
-see the documentation for [developing packages](https://flutter.io/developing-packages/) and
-[platform channels](https://flutter.io/platform-channels/). You can store
+see the documentation for [developing packages](https://flutter.dev/developing-packages/) and
+[platform channels](https://flutter.dev/platform-channels/). You can store
 your plugin source code in any GitHub repository (the present repo is only
 intended for plugins developed by the core Flutter team). Once your plugin
-is ready you can [publish](https://flutter.io/developing-packages/#publish)
-to the [pub repository](https://pub.dartlang.org/).
+is ready you can [publish](https://flutter.dev/developing-packages/#publish)
+to the [pub repository](https://pub.dev/).
 
 If you wish to contribute a change to any of the existing plugins in this repo,
 please review our [contribution guide](https://github.com/flutter/plugins/blob/master/CONTRIBUTING.md),
@@ -38,40 +38,40 @@
 
 | Plugin | Pub |
 |--------|-----|
-| [android_alarm_manager](./packages/android_alarm_manager/) | [![pub package](https://img.shields.io/pub/v/android_alarm_manager.svg)](https://pub.dartlang.org/packages/android_alarm_manager) |
-| [android_intent](./packages/android_intent/) | [![pub package](https://img.shields.io/pub/v/android_intent.svg)](https://pub.dartlang.org/packages/android_intent) |
-| [battery](./packages/battery/) | [![pub package](https://img.shields.io/pub/v/battery.svg)](https://pub.dartlang.org/packages/battery) |
-| [camera](./packages/camera/) | [![pub package](https://img.shields.io/pub/v/camera.svg)](https://pub.dartlang.org/packages/camera) |
-| [connectivity](./packages/connectivity/) | [![pub package](https://img.shields.io/pub/v/connectivity.svg)](https://pub.dartlang.org/packages/connectivity) |
-| [device_info](./packages/device_info/) | [![pub package](https://img.shields.io/pub/v/device_info.svg)](https://pub.dartlang.org/packages/device_info) |
-| [google_maps_flutter](./packages/google_maps_flutter) | [![pub package](https://img.shields.io/pub/v/google_maps_flutter.svg)](https://pub.dartlang.org/packages/google_maps_flutter) |
-| [google_sign_in](./packages/google_sign_in/) | [![pub package](https://img.shields.io/pub/v/google_sign_in.svg)](https://pub.dartlang.org/packages/google_sign_in) |
-| [image_picker](./packages/image_picker/) | [![pub package](https://img.shields.io/pub/v/image_picker.svg)](https://pub.dartlang.org/packages/image_picker) |
-| [local_auth](./packages/local_auth/) | [![pub package](https://img.shields.io/pub/v/local_auth.svg)](https://pub.dartlang.org/packages/local_auth) |
-| [package_info](./packages/package_info/) | [![pub package](https://img.shields.io/pub/v/package_info.svg)](https://pub.dartlang.org/packages/package_info) |
-| [path_provider](./packages/path_provider/) | [![pub package](https://img.shields.io/pub/v/path_provider.svg)](https://pub.dartlang.org/packages/path_provider) |
-| [quick_actions](./packages/quick_actions/) | [![pub package](https://img.shields.io/pub/v/quick_actions.svg)](https://pub.dartlang.org/packages/quick_actions) |
-| [sensors](./packages/sensors/) | [![pub package](https://img.shields.io/pub/v/sensors.svg)](https://pub.dartlang.org/packages/sensors) |
-| [share](./packages/share/) | [![pub package](https://img.shields.io/pub/v/share.svg)](https://pub.dartlang.org/packages/share) |
-| [shared_preferences](./packages/shared_preferences/) | [![pub package](https://img.shields.io/pub/v/shared_preferences.svg)](https://pub.dartlang.org/packages/shared_preferences) |
-| [url_launcher](./packages/url_launcher/) | [![pub package](https://img.shields.io/pub/v/url_launcher.svg)](https://pub.dartlang.org/packages/url_launcher) |
-| [video_player](./packages/video_player/) | [![pub package](https://img.shields.io/pub/v/video_player.svg)](https://pub.dartlang.org/packages/video_player) |
-| [webview_flutter](./packages/webview_flutter/) | [![pub package](https://img.shields.io/pub/v/webview_flutter.svg)](https://pub.dartlang.org/packages/webview_flutter) |
+| [android_alarm_manager](./packages/android_alarm_manager/) | [![pub package](https://img.shields.io/pub/v/android_alarm_manager.svg)](https://pub.dev/packages/android_alarm_manager) |
+| [android_intent](./packages/android_intent/) | [![pub package](https://img.shields.io/pub/v/android_intent.svg)](https://pub.dev/packages/android_intent) |
+| [battery](./packages/battery/) | [![pub package](https://img.shields.io/pub/v/battery.svg)](https://pub.dev/packages/battery) |
+| [camera](./packages/camera/) | [![pub package](https://img.shields.io/pub/v/camera.svg)](https://pub.dev/packages/camera) |
+| [connectivity](./packages/connectivity/) | [![pub package](https://img.shields.io/pub/v/connectivity.svg)](https://pub.dev/packages/connectivity) |
+| [device_info](./packages/device_info/) | [![pub package](https://img.shields.io/pub/v/device_info.svg)](https://pub.dev/packages/device_info) |
+| [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) |
+| [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) |
+| [image_picker](./packages/image_picker/) | [![pub package](https://img.shields.io/pub/v/image_picker.svg)](https://pub.dev/packages/image_picker) |
+| [local_auth](./packages/local_auth/) | [![pub package](https://img.shields.io/pub/v/local_auth.svg)](https://pub.dev/packages/local_auth) |
+| [package_info](./packages/package_info/) | [![pub package](https://img.shields.io/pub/v/package_info.svg)](https://pub.dev/packages/package_info) |
+| [path_provider](./packages/path_provider/) | [![pub package](https://img.shields.io/pub/v/path_provider.svg)](https://pub.dev/packages/path_provider) |
+| [quick_actions](./packages/quick_actions/) | [![pub package](https://img.shields.io/pub/v/quick_actions.svg)](https://pub.dev/packages/quick_actions) |
+| [sensors](./packages/sensors/) | [![pub package](https://img.shields.io/pub/v/sensors.svg)](https://pub.dev/packages/sensors) |
+| [share](./packages/share/) | [![pub package](https://img.shields.io/pub/v/share.svg)](https://pub.dev/packages/share) |
+| [shared_preferences](./packages/shared_preferences/) | [![pub package](https://img.shields.io/pub/v/shared_preferences.svg)](https://pub.dev/packages/shared_preferences) |
+| [url_launcher](./packages/url_launcher/) | [![pub package](https://img.shields.io/pub/v/url_launcher.svg)](https://pub.dev/packages/url_launcher) |
+| [video_player](./packages/video_player/) | [![pub package](https://img.shields.io/pub/v/video_player.svg)](https://pub.dev/packages/video_player) |
+| [webview_flutter](./packages/webview_flutter/) | [![pub package](https://img.shields.io/pub/v/webview_flutter.svg)](https://pub.dev/packages/webview_flutter) |
 | | |
 | **FlutterFire Plugins** |  |
-| [cloud_firestore](./packages/cloud_firestore/) | [![pub package](https://img.shields.io/pub/v/cloud_firestore.svg)](https://pub.dartlang.org/packages/cloud_firestore)
-| [cloud_functions](./packages/cloud_functions/) | [![pub package](https://img.shields.io/pub/v/cloud_functions.svg)](https://pub.dartlang.org/packages/cloud_functions) |
-| [firebase_admob](./packages/firebase_admob/) | [![pub package](https://img.shields.io/pub/v/firebase_admob.svg)](https://pub.dartlang.org/packages/firebase_admob) |
-| [firebase_analytics](./packages/firebase_analytics/) | [![pub package](https://img.shields.io/pub/v/firebase_analytics.svg)](https://pub.dartlang.org/packages/firebase_analytics) |
-| [firebase_auth](./packages/firebase_auth/) | [![pub package](https://img.shields.io/pub/v/firebase_auth.svg)](https://pub.dartlang.org/packages/firebase_auth) |
-| [firebase_core](./packages/firebase_core/) | [![pub package](https://img.shields.io/pub/v/firebase_core.svg)](https://pub.dartlang.org/packages/firebase_core) |
-| [firebase_crashlytics](./packages/firebase_crashlytics/) | [![pub package](https://img.shields.io/pub/v/firebase_crashlytics.svg)](https://pub.dartlang.org/packages/firebase_crashlytics) |
-| [firebase_database](./packages/firebase_database/) | [![pub package](https://img.shields.io/pub/v/firebase_database.svg)](https://pub.dartlang.org/packages/firebase_database) |
-| [firebase_dynamic_links](./packages/firebase_dynamic_links/) | [![pub package](https://img.shields.io/pub/v/firebase_dynamic_links.svg)](https://pub.dartlang.org/packages/firebase_dynamic_links) |
-| [firebase_messaging](./packages/firebase_messaging/) | [![pub package](https://img.shields.io/pub/v/firebase_messaging.svg)](https://pub.dartlang.org/packages/firebase_messaging) |
-| [firebase_ml_vision](./packages/firebase_ml_vision/) | [![pub package](https://img.shields.io/pub/v/firebase_ml_vision.svg)](https://pub.dartlang.org/packages/firebase_ml_vision) |
-| [firebase_performance](./packages/firebase_performance/) | [![pub package](https://img.shields.io/pub/v/firebase_performance.svg)](https://pub.dartlang.org/packages/firebase_performance) |
-| [firebase_remote_config](./packages/firebase_remote_config/) | [![pub package](https://img.shields.io/pub/v/firebase_remote_config.svg)](https://pub.dartlang.org/packages/firebase_remote_config) |
-| [firebase_storage](./packages/firebase_storage/) | [![pub package](https://img.shields.io/pub/v/firebase_storage.svg)](https://pub.dartlang.org/packages/firebase_storage) |
+| [cloud_firestore](./packages/cloud_firestore/) | [![pub package](https://img.shields.io/pub/v/cloud_firestore.svg)](https://pub.dev/packages/cloud_firestore)
+| [cloud_functions](./packages/cloud_functions/) | [![pub package](https://img.shields.io/pub/v/cloud_functions.svg)](https://pub.dev/packages/cloud_functions) |
+| [firebase_admob](./packages/firebase_admob/) | [![pub package](https://img.shields.io/pub/v/firebase_admob.svg)](https://pub.dev/packages/firebase_admob) |
+| [firebase_analytics](./packages/firebase_analytics/) | [![pub package](https://img.shields.io/pub/v/firebase_analytics.svg)](https://pub.dev/packages/firebase_analytics) |
+| [firebase_auth](./packages/firebase_auth/) | [![pub package](https://img.shields.io/pub/v/firebase_auth.svg)](https://pub.dev/packages/firebase_auth) |
+| [firebase_core](./packages/firebase_core/) | [![pub package](https://img.shields.io/pub/v/firebase_core.svg)](https://pub.dev/packages/firebase_core) |
+| [firebase_crashlytics](./packages/firebase_crashlytics/) | [![pub package](https://img.shields.io/pub/v/firebase_crashlytics.svg)](https://pub.dev/packages/firebase_crashlytics) |
+| [firebase_database](./packages/firebase_database/) | [![pub package](https://img.shields.io/pub/v/firebase_database.svg)](https://pub.dev/packages/firebase_database) |
+| [firebase_dynamic_links](./packages/firebase_dynamic_links/) | [![pub package](https://img.shields.io/pub/v/firebase_dynamic_links.svg)](https://pub.dev/packages/firebase_dynamic_links) |
+| [firebase_messaging](./packages/firebase_messaging/) | [![pub package](https://img.shields.io/pub/v/firebase_messaging.svg)](https://pub.dev/packages/firebase_messaging) |
+| [firebase_ml_vision](./packages/firebase_ml_vision/) | [![pub package](https://img.shields.io/pub/v/firebase_ml_vision.svg)](https://pub.dev/packages/firebase_ml_vision) |
+| [firebase_performance](./packages/firebase_performance/) | [![pub package](https://img.shields.io/pub/v/firebase_performance.svg)](https://pub.dev/packages/firebase_performance) |
+| [firebase_remote_config](./packages/firebase_remote_config/) | [![pub package](https://img.shields.io/pub/v/firebase_remote_config.svg)](https://pub.dev/packages/firebase_remote_config) |
+| [firebase_storage](./packages/firebase_storage/) | [![pub package](https://img.shields.io/pub/v/firebase_storage.svg)](https://pub.dev/packages/firebase_storage) |
 
 Learn more about [FlutterFire](https://github.com/flutter/plugins/blob/master/FlutterFire.md).