App creating your sf2 translations files via google translate API.
Get Composer.
Get vendors:
$ php composer.phar install
Put your base messages.[yourlanguage].yml file in datas directory.
Run the program with that command:
$ php app/console translator "[yourlanguage]" "es, en, it"
This command translates your base yml file in spanish, english and italian. File will be created in output directory.
That's it !
Marks: think to escpae quote in a string ("'" => "'").