message: docs: add functions example to README
diff: @@ -32,6 +32,14 @@ module.exports.render = (event, context, callback) => {
  In your `serverless.yml` configure the plugin:
  ```
  +functions:
  + home-page:
  + handler: build/serverless/pages/index.js
  + events: ...
  + about-page:
  + handler: build/serverless/pages/about.js
  + events: ...
  +
  custom:
  serverless-nextjs:
  nextBuildDir: build
  