Update README.md

Add download link to CLI installation package

README.md

@@ -45,6 +45,8 @@ The GUI for Holos 4 is freely available to download and use from the <a href="ht
 
 *Note that the Holos 4 GUI is not open source at this time.*
 
+A command line interface (CLI) version of Holos is available <a href="https://agriculture.canada.ca/holos/cli/setup.exe>at this link</a>.
+
 # License
 
 Unless otherwise noted, the source code of this project is covered under Crown Copyright, Government of Canada, and is distributed under the <a href="https://github.com/holos-aafc/Holos/blob/main/LICENSE" target="_blank">GNU General Public License (GPLv3)</a>.