Add Alexa AVS

Author: Thibault Maekelbergh

README.md

@@ -82,6 +82,7 @@ Contributions *very welcome* but first see [Contributing](#contributing)
 - [Planning lunch with a Slackbot on resin.io](https://resin.io/blog/planning-lunch-with-a-slackbot-on-resin-io/) - Node.js Slackbot (lunchbot), hosted on Resin.
 - [Sonus](https://github.com/evancohen/sonus) - Node.js voice control for your Pi (and everything else) with customizable offline hotword detection.
 - [Sonic Pi](https://github.com/samaaron/sonic-pi) - The Live Coding Music Synth for Everyone.
+- [Alexa AVS](https://github.com/alexa/alexa-avs-sample-app/wiki/Raspberry-Pi) - Demonstration on using Alexa Voice Service with a Java client and Node.js server.
 
 ## Resources
 ### Articles