Plugin translation problem

Dear Author, first of all, thank you very much for your work, the plugin works like a charm. For a client of mine I have to translate your plugin to Hungarian, and just noticed that you’re constantly missing the textdomain attribute on each of the functions that handles translations. For example:
__( 'This product has been discontinued.' )
should be replaced with:
__( 'This product has been discontinued.', 'woocommerce-discontinued-products' )

Please handle this issue, so your nice plugin will be translatable. ??

Thanks anyway, and keep up the good work!

Cheers, Levi