[camera_web] Update usage documentation (#4371)

Author: bselwe

packages/camera/camera_web/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.2.1+1
+
+* Update usage documentation.
+
 ## 0.2.1
 
 * Add video recording functionality.

packages/camera/camera_web/README.md

@@ -8,8 +8,9 @@ The web implementation of [`camera`][camera].
 
 ### Depend on the package
 
-This package is not an [endorsed implementation](https://flutter.dev/docs/development/packages-and-plugins/developing-packages#endorsed-federated-plugin)
-of the camera plugin yet, so you'll need to [add it explicitly](https://pub.dev/packages/camera_web/install).
+This package is [endorsed](https://flutter.dev/docs/development/packages-and-plugins/developing-packages#endorsed-federated-plugin),
+which means you can simply use `camera`
+normally. This package will be automatically included in your app when you do.
 
 ## Example
 

packages/camera/camera_web/pubspec.yaml

@@ -2,7 +2,7 @@ name: camera_web
 description: A Flutter plugin for getting information about and controlling the camera on Web.
 repository: https://github.com/flutter/plugins/tree/master/packages/camera/camera_web
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.2.1
+version: 0.2.1+1
 
 environment:
   sdk: ">=2.12.0 <3.0.0"