Improve the sample module configuration

sample/prelude-modules.el

@@ -1,3 +1,42 @@
+;;; prelude-modules.el --- A listing of modules to load on startup
+;;
+;; Copyright © 2011-2020 Bozhidar Batsov
+;;
+;; Author: Bozhidar Batsov <bozhidar@batsov.com>
+;; URL: https://github.com/bbatsov/prelude
+
+;; This file is not part of GNU Emacs.
+
+;;; Commentary:
+
+;; This file is just a list of Prelude modules to load on startup.
+;; For convenience the modules are grouped in several categories.
+;; The prelude-modules.el in the samples folder should be copied
+;; to your personal folder and edited there.
+
+;; Note that some modules can't be used together - e.g. you shouldn't
+;; enable both prelude-ido and prelude-ivy, as they serve the same
+;; purpose.
+
+;;; License:
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU General Public License
+;; as published by the Free Software Foundation; either version 3
+;; of the License, or (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Code:
+
 ;;; Uncomment the modules you'd like to use and restart Prelude afterwards
 
 ;;; General productivity tools
@@ -46,3 +85,6 @@
 
 ;;; Misc
 (require 'prelude-erc) ;; A popular Emacs IRC client (useful if you're still into Freenode)
+
+(provide 'prelude-modules)
+;;; prelude-modules.el ends here