doc: update.

Author: cangzhang

README.md

@@ -1,30 +1,10 @@
-# Cat Coding — A Webview API Sample
-
-Demonstrates VS Code's [webview API](https://code.visualstudio.com/api/extension-guides/webview). This includes:
-
-- Creating and showing a basic webview.
-- Dynamically updating a webview's content.
-- Loading local content in a webview.
-- Running scripts in a webview.
-- Sending message from an extension to a webview.
-- Sending messages from a webview to an extension.
-- Using a basic content security policy.
-- Webview lifecycle and handling dispose.
-- Saving and restoring state when the panel goes into the background.
-- Serialization and persistence across VS Code reboots.
-
-## VS Code API
-
-### `vscode` module
-
-- [`window.createWebviewPanel`](https://code.visualstudio.com/api/references/vscode-api#window.createWebviewPanel)
-- [`window.registerWebviewPanelSerializer`](https://code.visualstudio.com/api/references/vscode-api#window.registerWebviewPanelSerializer)
+# Coding plugin for VS Code.
 
 ## Running the example
 
 - Open this example in VS Code 1.47+
-- `npm install`
-- `npm run watch` or `npm run compile`
+- `yarn install`
+- `yarn watch` or `yarn compile`
 - `F5` to start debugging
 
 Run the `Cat Coding: Start cat coding session` to create the webview.