docs: update

Author: ulivz

docs/.vuepress/config.js

@@ -1,4 +1,4 @@
 module.exports = {
-  title: 'vuepress-theme-blogging',
+  title: '@vuepress/theme-blog',
   description: 'A blog theme of VuePress'
 }

docs/README.md

@@ -1,18 +1,190 @@
-# vuepress-theme-blogging
+---
+sidebar: auto
+---
 
-[![NPM version](https://badgen.net/npm/v/vuepress-theme-blogging)](https://npmjs.com/package/vuepress-theme-blogging) [![NPM downloads](https://badgen.net/npm/dm/vuepress-theme-blogging)](https://npmjs.com/package/vuepress-theme-blogging) [![CircleCI](https://badgen.net/circleci/github/ulivz/vuepress-theme-blogging/master)](https://circleci.com/gh/ulivz/vuepress-theme-blogging/tree/master)
+# @vuepress/plugin-blog
+
+> Default blog theme for VuePress 
 
 ## Install
 
 ```bash
-npm i vuepress-theme-blogging
+yarn add @vuepress/theme-blog -D
+# OR npm install @vuepress/theme-blog -D
 ```
 
 ## Usage
 
 ```js
-const vuepressThemeBlogging = require('vuepress-theme-blogging')
+// .vuepress/config.js
+module.exports = {
+  theme: '@vuepress/blog',
+  themeConfig: {
+    // Please keep looking down to see the available options.
+  }
+}
+```
+
+## Options
+
+### nav
+
+- 类型: `Array<{ text: string, link: string }>`
+- 默认值: `undefined`
 
-vuepressThemeBlogging()
-//=> foo
+e.g.
+
+```js
+module.exports = {
+  themeConfig: {
+    nav: [
+      {
+        text: 'Home',
+        link: '/',
+      },
+      {
+        text: 'Archive',
+        link: '/archive/',
+      },
+      {
+        text: 'Tags',
+        link: '/tag/',
+      },
+    ],
+  },
+}
 ```
+
+### footer
+
+#### footer.contact
+
+
+- 类型: `Array<{ type: ContactType, link: string }>`
+- 默认值: `undefined`
+
+Contact information, displayed on the left side of footer.
+
+```js
+module.exports = {
+  themeConfig: {
+    footer: {
+      contact: [
+        {
+          type: 'github',
+          link: 'https://github.com/vuejs/vuepress',
+        },
+        {
+          type: 'twitter',
+          link: 'https://github.com/vuejs/vuepress',
+        },
+      ],
+    },
+  },
+}
+```
+
+For now `ContactType` supports following enums:
+
+- github
+- facebook
+- twitter
+
+::: tip
+Welcome contribution of adding more built-in contact type.
+:::
+
+#### footer.copyright
+
+Copyright information, displayed on the right side of footer.
+
+```js
+module.exports = {
+  themeConfig: {
+    footer: {
+      copyright: [
+        {
+          text: 'Privacy Policy',
+          link: 'https://policies.google.com/privacy?hl=en-US',
+        },
+        {
+          text: 'MIT Licensed | Copyright © 2018-present Vue.js',
+          link: '',
+        },
+      ],
+    },
+  },
+}
+```
+
+### modifyBlogPluginOptions
+
+A function used to modify the default blog plugin options. It's common to used it to add custom classifiers. e.g.
+
+```js
+module.exports = {
+  themeConfig: {
+    modifyBlogPluginOptions(blogPlugnOptions) {
+      const writingDirectoryClassifier = {
+        id: 'writing',
+        dirname: '_writings',
+        path: '/writings/',
+        layout: 'IndexWriting',
+        itemLayout: 'Writing',
+        itemPermalink: '/writings/:year/:month/:day/:slug',
+        pagination: {
+          perPagePosts: 5,
+        },
+      }
+      
+      blogPlugnOptions.directories.push(writingDirectoryClassifier)
+      return blogPlugnOptions
+    },
+  },
+}
+```
+
+Here is the default blog plugin options:
+
+```js
+{
+  directories: [
+    {
+      id: 'post',
+      dirname: '_posts',
+      path: '/',
+      layout: 'IndexPost',
+      itemLayout: 'Post',
+      itemPermalink: '/:year/:month/:day/:slug',
+      pagination: {
+        perPagePosts: 5,
+      },
+    },
+    {
+      id: 'archive',
+      dirname: '_archive',
+      path: '/archive/',
+      layout: 'IndexArchive',
+      itemLayout: 'Post',
+      itemPermalink: '/archive/:year/:month/:day/:slug',
+      pagination: {
+        perPagePosts: 5,
+      },
+    },
+  ],
+  frontmatters: [
+    {
+      id: "tag",
+      keys: ['tag', 'tags'],
+      path: '/tag/',
+      layout: 'Tags',
+      frontmatter: { title: 'Tags' },
+      itemlayout: 'Tag',
+      pagination: {
+        perPagePosts: 5
+      }
+    },
+  ]
+}
+```
+

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@vuepress/theme-blog",
   "version": "0.0.0",
-  "description": "Official blog theme of VuePress",
+  "description": "Default blog theme for VuePress",
   "main": "index.js",
   "files": [
     "index.js",