   :ensure t)
 
 (defun ar/add-functions-to-mode-hooks (hook-functions hooks)
-  "Adds HOOK-FUNCTIONS to mode HOOKS."
+  "Add HOOK-FUNCTIONS to mode HOOKS."
   (dolist (hook hooks)
     (dolist (hook-function hook-functions)
       (add-hook hook hook-function))))
 
 (defun ar/emacs-lisp-mode-hook-function ()
-  "Called when entering emacs-lisp-mode."
+  "Called when entering `emacs-lisp-mode'."
   (helm-dash-activate-docset "Emacs Lisp")
   (turn-on-elisp-slime-nav-mode))
 (ar/add-functions-to-mode-hooks '(ar/emacs-lisp-mode-hook-function)

  (yas-minor-mode))

(defun ar/markdown-mode-hook-function ()
  "Called when entering markdown-mode."
  (setq markdown-indent-on-enter nil)
  (define-key markdown-mode-map (kbd "RET") 'electric-newline-and-maybe-indent))



;;  From http://oremacs.com/2015/01/05/youtube-dl
(defun ar/youtube-dowload ()
  "Download youtube video from url in clipboard."
  (interactive)
  (let* ((str (current-kill 0))
         (default-directory "~/Downloads")
