https://github.com/emacs-jp/migemo.git
git clone 'git://github.com/emacs-jp/migemo.git'
migemo.el provides Japanese increment search with ‘Romanization of Japanese’(ローマ字).
(require 'migemo)
(setq migemo-command "cmigemo")
(setq migemo-options '("-q" "--emacs"))
;; Set your installed path
(setq migemo-dictionary "/usr/local/share/migemo/utf-8/migemo-dict")
(setq migemo-user-dictionary nil)
(setq migemo-regex-dictionary nil)
(setq migemo-coding-system 'utf-8-unix)
(migemo-init)