[mary-users] Use Mary to read aloud

[Rijk Theodoor Oosterhoff]

Dear Matteo,

Currently i am working on a gui front-end. It is very beta now, but a
first attempt can be downloaded from:

https://github.com/raginggoblin/speechless/releases/download/v0.1/SpeechLess.one-jar.jar

This will download a single jar, you can run it with:
java -jar SpeechLess.one-jar.jar

Java 8 is needed to run this, but you probably already have this installed.

R