[mojosetup] Patch: Add Simplified Chinese translation.

[Ryan C. Gordon]

> Could someone  have a look at this patch? Are there anything should be
> improved?
> Thank you very much! :-)

Generally translations get entered here:

     https://translations.launchpad.net/mojosetup/trunk/+translations

And I merge them from that website occasionally.

I can add your translations through there if you don't want to do it, 
though!

--ryan.