README: Add installation instructions for MacPorts

1 files changed, 8 insertions, 0 deletions

diff --git a/README.md b/README.md
index f12e880..986e195 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,11 @@ Mac OS X users can install with Homebrew:
 
 	$ brew install teddywing/formulae/readline-incdec
 
+Or with MacPorts, after [adding a custom repository source][teddywing ports
+repository]:
+
+	$ sudo port install readline-incdec
+
 On other platforms, download the `incdec.bash` and, if desired,
 `incdec-bindings.bash` files.
 
@@ -45,6 +50,9 @@ bindings for `C-x -` and `C-x +`:
 	bind -x '"\C-x+": __readline_incdec_increment'
 
 
+[teddywing ports repository]: https://github.com/teddywing/macports-ports#adding-this-repository-source
+
+
 ## License
 Copyright © 2021 Teddy Wing. Licensed under the GNU GPLv3+ (see the included
 COPYING file).