Add Japanese README explaining how to add new conversion.

Tatsuo Ishii <ishii@postgresql.org>

Commit: 19a20e04bd95a78fa0c854617b8462203cf98980
Author: Tatsuo Ishii <ishii@postgresql.org>
Date: 2002-07-24T07:05:41Z
Releases: 7.3.1
Add Japanese README explaining how to add new conversion.
English README will come soon...

Files