[arm-allstar] Text to Speech - Amazon Polly

[Randy Neals]

https://aws.amazon.com/polly/

The Amazon Polly free tier includes 5 million characters per month for
speech or Speech Marks requests, for the first 12 months, starting from the
first request for speech.

I've used the demo on the AWS dashboard to make several recordings.
I used another site to transcode the recordings to other file formats.

The more advanced among us may find a way to use the API and transcribe
things like weather bulletins etc.

-Randy
W3RWN