feat: Add some documentation

packages/@vuepress/vue-cli-plugin-vuepress/README.md

@@ -1 +1,53 @@
-# vue-cli-plugin-vuepress
+# vue-cli-plugin-vuepress
+
+> The official vue-cli plugin for VuePress
+
+## Usage
+
+### With vue ui
+
+- Run `vue ui` in a terminal.
+- Choose an existing Vue project or create a new one 
+- Go to the `Plugins` section
+- Click the `Add plugin` button
+- Search `@vuepress/vue-cli-plugin-vuepress`
+- Install the plugin and answer questions
+
+If you go to the `Tasks` section, you can see that you now have access to two new VuePress commands:
+
+- docs:dev (Run your VuePress site in dev mode)
+- docs:build (Build your VuePress site)
+
+Those commands are available in your `package.json` in the `scripts` section.
+
+To edit/bootstrap your VuePress configuration, go to the `Configuration` section and select VuePress.
+Note that if you edit your VuePress config while it's running in dev mode, it will be live reloaded.
+
+**⚠️ Some configurations are not covered by this ui plugin. Refer to the [official VuePress documentaion](https://vuepress.vuejs.org/) for advanced config ⚠️**
+
+### With vue-cli
+
+- Run `vue add @vuepress/vue-cli-plugin-vuepress` in a terminal:
+- Answer questions
+
+Run `yarn docs:dev` for dev mode or `yarn docs:build` to build your VuePress site.
+See more details in the [official VuePress documentaion](https://vuepress.vuejs.org/).
+
+## Local Development
+
+### 1. Clone this repository
+
+```
+git clone https://github.com/vuepressjs/vue-cli-plugin-vuepress.git
+cd vue-cli-plugin-vuepress
+```
+
+### 2. Install dependencies
+
+```
+yarn
+```
+
+### 3. Install plugin locally
+
+Please refer to the official [vue-cli documentation](https://cli.vuejs.org/dev-guide/plugin-dev.html#installing-plugin-locally)