I made a new topic for this issue, since #149 has already closed.

I finished translation for concept, anatomy and getting-started sections.
(See #576 and #579)
Also I made the documents up-to-date. Fortunately, the document is quite stable so it took only 3 days to follow the update for one year.
Now we have decent amount of documents for people starting sails in Japan.

I think it going to be useful if we have one in the official website as well.
Looking for former discussion, it would be better we have a combo-box for choosing language, and making uri for for each language, e.g:
https://sailsjs.org/#/documentation/ -> English docs (Default)
https://sailsjs.org/#/ja/documentation/ -> Japanese Docs

Or if it takes so long to develop some code for it, we can simply deploy same code with another branch and domain.
I have sailsjs.jp and happy to prepare some instances if someone tell me how to do it.