docs: config

Author: Guillaume Chau

README.md

@@ -20,6 +20,7 @@ Simple Server-Side-Rendering plugin for Vue CLI (Work-in-Progress)
 - Vuex store
 - Async routes
 - [vue-cli-plugin-apollo](https://github.com/Akryum/vue-cli-plugin-apollo) support
+- Custom middlewares
 
 <br>
 
@@ -41,3 +42,41 @@ To run the app in production:
 yarn run ssr:build
 yarn run ssr:start
 ```
+
+## Configuration
+
+Here are the optional settings available in your `vue.config.js` file:
+
+```js
+const path = require('path')
+
+module.exports = {
+  pluginOptions: {
+    ssr: {
+      // Listening port for `serve` command
+      port: null,
+      // Listening host for `serve` command
+      host: null,
+      // Entry for each target
+      entry: target => `./src/entry-${target}`,
+      // Default title
+      defaultTitle: 'My app',
+      // Path to favicon
+      favicon: './public/favicon.ico',
+      // Skip some requests from being server-side rendered
+      skipRequests: req => req.originalUrl === '/graphql',
+      // See https://ssr.vuejs.org/guide/build-config.html#externals-caveats
+      nodeExternalsWhitelist: [/\.css$/, /\?vue&type=style/],
+      // Function to connect custom middlewares
+      extendServer: app => {
+        const cookieParser = require('cookie-parser')
+        app.use(cookieParser())
+      },
+      // Paths
+      distPath: path.resolve(__dirname, './dist'),
+      templatePath: path.resolve(__dirname, './dist/index.html'),
+      serviceWorkerPath: path.resolve(__dirname, './dist/service-worker.js'),
+    }
+  }
+}
+```