(rc/require 'smex 'ido-completing-read+)

(require 'ido-completing-read+)

(ido-mode 1)
(ido-everywhere 1)
(ido-ubiquitous-mode 1)

(global-set-key (kbd "M-x") 'smex)
(global-set-key (kbd "C-c C-c M-x") 'execute-extended-command)