*scratch*.el

(defun my-package-complete ()
  (require 'package)
  (customize-set-variable
   'package-archives
   '(("gnu" . "http://elpa.gnu.org/packages/")
     ("marmalade" . "http://marmalade-repo.org/packages/")
     ("melpa" . "http://melpa.milkbox.net/packages/")
     ))
  (customize-save-customized)
  (defvar my-packages '(deft erc key-chord magit
                        minimap org org-blog sauron
                        smartparens smex zenburn-theme))
  (dolist (p my-packages)
    (when (not (package-installed-p p)) (package-install p))))

(add-hook 'after-init-hook 'my-package-complete)