Doc: update supported platforms

Author: CarterLi

README.md

@@ -11,7 +11,7 @@
 [![latest packaged version(s)](https://repology.org/badge/latest-versions/fastfetch.svg)](https://repology.org/project/fastfetch/versions)
 [![Packaging status](https://repology.org/badge/tiny-repos/fastfetch.svg)](https://repology.org/project/fastfetch/versions)
 
-Fastfetch is a [neofetch](https://github.com/dylanaraps/neofetch)-like tool for fetching system information and displaying it prettily. It is written mainly in C, with performance and customizability in mind. Currently, Linux, Android, FreeBSD, macOS, SunOS and Windows 7+ are supported.
+Fastfetch is a [neofetch](https://github.com/dylanaraps/neofetch)-like tool for fetching system information and displaying it prettily. It is written mainly in C, with performance and customizability in mind. Currently, Linux, macOS, Windows 7+, Android, FreeBSD, OpenBSD, NetBSD, DragonFly, Haiku and SunOS are supported.
 
 <img src="screenshots/example1.png" width="49%" align="left" />
 <img src="https://upload.wikimedia.org/wikipedia/commons/2/24/Transparent_Square_Tiles_Texture.png" width="49%" height="16px" align="left" />