You can install evil-anzu.el from MELPA with package.el.
You can use evil-anzu.el
only loading.
;; Emacs 24.4 or higher
(with-eval-after-load 'evil
(require 'evil-anzu))
;; Emacs <= 24.3
(eval-after-load 'evil
'(progn
(require 'evil-anzu)))