Update to v7 documentation.

Author: ota-meshi

README.md

@@ -11,6 +11,14 @@
 
 See [the official website](https://eslint.vuejs.org).
 
+> :exclamation: Attention - this is documentation for version `7.x` :exclamation:
+>
+> This branch contains `eslint-plugin-vue@next` which is a pre-released `7.0`, but it's not the default version that you get with `npm install eslint-plugin-vue`. In order to install this you need to specify either `"eslint-plugin-vue": "next"` in `package.json` or do `npm install eslint-plugin-vue@next`.
+>
+> Please try it and report any issues that you might have encountered.
+>
+> If you want to check previous releases [go here](https://github.com/vuejs/eslint-plugin-vue/releases).
+
 ## :anchor: Versioning Policy
 
 This plugin is following [Semantic Versioning](https://semver.org/) and [ESLint's Semantic Versioning Policy](https://github.com/eslint/eslint#semantic-versioning-policy).

docs/.vuepress/theme/Layout.vue

@@ -0,0 +1,76 @@
+<template>
+  <BaseLayout
+    v-bind="$attrs"
+    v-on="$listeners">
+    <slot
+      name="sidebar-top"
+      slot="sidebar-top"
+    />
+    <slot
+      name="sidebar-bottom"
+      slot="sidebar-bottom"
+    />
+    <template
+      slot="page-top">
+      <div class="content beta-doc-description">
+        <div class="warning custom-block">
+          <p class="custom-block-title">Note</p>
+          <p>This is a documentation for version <code>{{docVersion}}</code>.<template v-if="hasNotYetBeenReleased"> Also, this documentation may contain content that has not yet been released.</template><br>
+          To check version <code>6.2.2</code> <a :href="v6DocLink">go here</a>.
+          To check previous releases <a href="https://github.com/vuejs/eslint-plugin-vue/releases">go here</a>.</p>
+        </div>
+      </div>
+      <slot
+        name="page-top"
+      />
+    </template>
+    <slot
+      name="page-bottom"
+      slot="page-bottom"
+    />
+  </BaseLayout>
+</template>
+<script>
+/**
+ * Layout definition to navigate to older versions of the document.
+ */
+import BaseLayout from 'vuepress/lib/default-theme/Layout.vue'
+import semver from 'semver'
+const version = semver.parse(require('../../../package.json').version)
+export default {
+  components: {
+    BaseLayout
+  },
+  computed: {
+    docVersion () {
+      if (version.major < 7) {
+        return '7.x'
+      }
+      return version.raw
+    },
+    hasNotYetBeenReleased () {
+      if (version.major < 7) {
+        return true
+      }
+      return false
+    },
+    v6DocLink () {
+      if (this.$page.path.endsWith('.html')) {
+        return `https://github.com/vuejs/eslint-plugin-vue/blob/v6.2.2/docs${this.$page.path.replace(/\.html$/, '')}.md`
+      }
+      return `https://github.com/vuejs/eslint-plugin-vue/blob/v6.2.2/docs${this.$page.path}README.md`
+    }
+  }
+}
+</script>
+<style scoped>
+.beta-doc-description {
+  padding-bottom: 0;
+}
+* ::v-deep .content ~ .content {
+  padding-top: 0;
+}
+* ::v-deep .content:not(.custom) h1{
+  margin-top: -3.1rem;
+}
+</style>

docs/user-guide/README.md

@@ -9,12 +9,12 @@ vue add @vue/cli-plugin-eslint
 
 Via [npm](https://www.npmjs.com/):
 ```bash
-npm install --save-dev eslint eslint-plugin-vue
+npm install --save-dev eslint eslint-plugin-vue@next
 ```
 
 Via [yarn](https://yarnpkg.com/):
 ```bash
-yarn add -D eslint eslint-plugin-vue
+yarn add -D eslint eslint-plugin-vue@next
 ```
 
 ::: tip Requirements