Add MacOS port in doc

Author: pblottiere

README.md

@@ -1,6 +1,6 @@
 # Pointcloud
 
-[![Release][release-image]][releases] [![Dockerhub][dockerhub-image]][dockerhub]
+[![Release][release-image]][releases] [![Dockerhub][dockerhub-image]][dockerhub] [![macOS](https://img.shields.io/badge/mac%20os-000000?style=for-the-badge&logo=macos&logoColor=F0F0F0)]
 
 [release-image]: https://img.shields.io/badge/release-1.2.5-green.svg?style=plastic
 [releases]: https://github.com/pgpointcloud/pointcloud/releases

doc/download.rst

@@ -81,6 +81,12 @@ pgPointcloud is directly included in the `PostGIS`_ bundle.
 .. _`PostGIS`: https://postgis.net/windows_downloads/
 
 
+**MacOS**
+
+pgpointcloud is available on macOS via `MacPorts`_.
+
+.. _`MacPorts`: https://ports.macports.org/port/pgpointcloud/
+
 **Debian**
 
 Debian packages are now `available`_ on: