Replace the install section in READMEs with link to pub.dev/install

dio/README-ZH.md

@@ -54,21 +54,7 @@ dio 是一个强大的 HTTP 网络请求库，支持全局配置、Restful API
 
 ### 添加依赖
 
-你可以使用以下命令将 dio 的最新稳定版依赖添加至你的项目：
-
-```console
-$ dart pub add dio
-```
-
-你也可以手动将 dio 添加至 pubspec.yaml：
-
-```yaml
-dependencies:
-  dio: ^替换为最新版本
-```
-
-最新稳定版本为：![Pub](https://img.shields.io/pub/v/dio.svg)
-最新包含开发版的版本为：![Pub](https://img.shields.io/pub/v/dio?include_prereleases)
+依照文档将 `dio` 包添加为 [pubspec 的依赖](https://pub.flutter-io.cn/packages/dio/install)。
 
 **在你更新之前：大版本和次要版本可能会包含不兼容的重大改动。<br/>
 请阅读 [迁移指南][] 了解完整的重大变更内容。**

dio/README.md

@@ -54,23 +54,10 @@ Timeout, Custom adapters, Transformers, etc.
 
 ## Get started
 
-### Add dependency
+### Install
 
-You can use the command to add dio as a dependency with the latest stable version:
+Add the `dio` package to your [pubspec dependencies](https://pub.dev/packages/dio/install).
 
-```console
-$ dart pub add dio
-```
-
-Or you can manually add dio into the dependencies section in your pubspec.yaml:
-
-```yaml
-dependencies:
-  dio: ^replace-with-latest-version
-```
-
-The latest version is: ![Pub](https://img.shields.io/pub/v/dio.svg)
-The latest version including pre-releases is: ![Pub](https://img.shields.io/pub/v/dio?include_prereleases)
 
 **Before you upgrade: Breaking changes might happen in major and minor versions of packages.<br/>
 See the [Migration Guide][] for the complete breaking changes list.**

plugins/cookie_manager/README.md

@@ -8,10 +8,7 @@ A cookie manager combines cookie_jar and dio, based on the interceptor algorithm
 
 ### Install
 
-```yaml
-dependencies:
-  dio_cookie_manager: ^latest-version
-```
+Add the `dio_cookie_manager` package to your [pubspec dependencies](https://pub.dev/packages/dio_cookie_manager/install).
 
 ### Usage
 

plugins/http2_adapter/README.md

@@ -8,10 +8,7 @@ An adapter that combines HTTP/2 and dio. Supports reusing connections, header co
 
 ### Install
 
-```yaml
-dependencies:
-  dio_http2_adapter: ^2.0.0 # latest version
-```
+Add the `dio_http2_adapter` package to your [pubspec dependencies](https://pub.dev/packages/dio_http2_adapter/install).
 
 ### Usage
 

plugins/native_dio_adapter/README.md

@@ -17,15 +17,21 @@ to delegate HTTP requests to the native platform instead of the `dart:io` platfo
 
 Inspired by the [Dart 2.18 release blog](https://medium.com/dartlang/dart-2-18-f4b3101f146c).
 
-# Motivation
+## Motivation
 
 Using the native platform implementation, rather than the socket-based [`dart:io` HttpClient](https://api.dart.dev/stable/dart-io/HttpClient-class.html) implementation, has several advantages:
 
 - It automatically supports platform features such VPNs and HTTP proxies.
 - It supports many more configuration options such as only allowing access through WiFi and blocking cookies.
 - It supports more HTTP features such as HTTP/3 and custom redirect handling.
 
-# Example
+## Get started
+
+### Install
+
+Add the `native_dio_adapter` package to your [pubspec dependencies](https://pub.dev/packages/native_dio_adapter/install).
+
+### Example
 
 ```dart
 final dioClient = Dio();