SSR docs

Author: phortx

docs/.vuepress/config.js

@@ -42,6 +42,7 @@ module.exports = {
         title: 'Advanced Topics',
         collapsable: false,
         children: [
+          '/guide/nuxt',
           '/guide/adapters',
           '/guide/connection-mode',
           '/guide/custom-queries',

docs/guide/nuxt.md

@@ -0,0 +1,35 @@
+# Nuxt.js / SSR Integration
+
+[[toc]]
+
+Since Version 1.0.0.RC.21 there is support for SSR. You will need
+[node-fetch](https://www.npmjs.com/package/node-fetch) in order to make it work and you have to
+construct your own HttpLink instance.
+
+Example store setup for nuxt.js:
+
+```javascript{13,14,15}
+import Vuex from 'vuex';
+import VuexORM from '@vuex-orm/core';
+import VuexORMGraphQL from '@vuex-orm/plugin-graphql';
+import { HttpLink } from 'apollo-link-http';
+import database from './database';
+import fetch from 'node-fetch';
+
+const options = {
+  database,
+  url: process.env.BACKEND_URL + '/api/v2',
+};
+
+if (process.server) {
+  options.link = new HttpLink({ uri: options.url, fetch });
+}
+
+VuexORM.use(VuexORMGraphQL, options);
+
+
+export default function createStore () {
+  const plugins = [VuexORM.install(database)];
+  return new Vuex.Store({ plugins });
+}
+```