That's great!

1) it's better to make translations of official releases, it will be easier to make updates when new UNA version is released

2) you need to use phing to package the module, please refer to point 9 in this doc on how to package modules:

https://github.com/unaio/una/wiki/Creating-new-language-module

3) to make a module update, please refer to the same doc, point 8