[Fix #559] Add an autoload for vkill

core/prelude-osx.el

@@ -43,6 +43,7 @@
 (setq ns-function-modifier 'hyper)
 
 ;; proced-mode doesn't work on OS X so we use vkill instead
+(autoload 'vkill "vkill" nil t)
 (global-set-key (kbd "C-x p") 'vkill)
 
 (defun prelude-swap-meta-and-super ()