Devfest summit example link

Author: Guillaume Chau

README.md

@@ -16,6 +16,8 @@ Integrates [apollo](http://www.apollostack.com/) in your [Vue](http://vuejs.org)
 
 [<img src="https://conf.vuejs.org/img/logo-48.png" alt="icon" width="16" height="16"/> VueConf 2017 demo](https://github.com/Akryum/vueconf-2017-demo) &amp; [slides](http://slides.com/akryum/graphql#/)
 
+[<img src="https://assets-cdn.github.com/favicon.ico" alt="icon" width="16" height="16"/> Devfest Summit Example](https://github.com/Akryum/devfest-nantes-2017) (with lots of features like SSR, OAuth, Realtime updates, Apollo Optics...)
+
 ## Table of contents
 
 - [Installation](#installation)