Hi Hector,
We prepared a wiki in Spanish which mirrors the one that exists for the English version, although we adapted some of the examples that didn't fit well after directly translating from English. You can find it in here:
https://github.com/citiususc/SimpleNLG-ES/wikiIn any case, there shouldn't be any noticeable differences of usage between both versions.
You can find a .jar file of the library in
https://github.com/citiususc/SimpleNLG-ES/releasesWe would be very grateful if you could report any bugs that you may find if you end up using it.
Thanks for your interest,