Google Wavenet support for Google TTS

https://texttospeech.googleapis.com/v1beta1/text:synthesize

{
	  "audioConfig": {
	    "audioEncoding": "LINEAR16",
	    "pitch": 0,
	    "speakingRate": 1
	  },
	  "input": {
	    "text": "Google Cloud Text-to-Speech enables developers to synthesize natural-sounding speech with 100+ voices, available in multiple languages and variants. It applies DeepMind’s groundbreaking research in WaveNet and Google’s powerful neural networks to deliver the highest fidelity possible. As an easy-to-use API, you can create lifelike interactions with your users, across many applications and devices."
	  },
	  "voice": {
	    "languageCode": "en-US",
	    "name": "en-US-Wavenet-D"
	  }
	}