Refresh on every package install

Author: jcs090218

test/windows-bootstrap.el

@@ -38,7 +38,7 @@
 
   (mapc (lambda (pkg)
           (unless (package-installed-p pkg)
-            (package-install pkg)))
+            (package-refresh-contents) (package-install pkg)))
         pkgs)
 
   (add-hook 'kill-emacs-hook