[nongnu] elpa/gruvbox-theme bf815732f3 2/4: Add NonGNU ELPA instructions to README.md

[ELPA Syncer]

branch: elpa/gruvbox-theme
commit bf815732f3d85f61f4a57fde6dcdad96c1f80142
Author: Stefan Kangas <stefan@marxist.se>
Commit: Jason Milkins <jasonm23@users.noreply.github.com>

    Add NonGNU ELPA instructions to README.md
---
 README.md | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 70e20404d2..98df62bf35 100644
--- a/README.md
+++ b/README.md
@@ -111,14 +111,20 @@ This theme contains custom support for the following 
features and plugins:
 
 ## Installation and usage
 
-The recommended way to install the Gruvbox theme is with MELPA.
+The recommended way to install the Gruvbox theme is with NonGNU ELPA or MELPA.
+The version of `gruvbox-theme` there will always be up-to-date.
+
+### NonGNU ELPA
+
+You can install Gruvbox from [NonGNU
+ELPA](http://elpa.nongnu.org/nongnu/gruvbox-theme.html).  This archive is
+enabled by default in Emacs 28 or later, so just type `M-x package-install`.
 
 ### MELPA
 
 If you're an Emacs 24 user or you have a recent version of `package.el` you can
 install the Gruvbox theme from the [MELPA
-repository](http://melpa.milkbox.net/#/gruvbox-theme). The version of
-`gruvbox-theme` there will always be up-to-date.
+repository](http://melpa.milkbox.net/#/gruvbox-theme).
 
 ### No `package.el`