Update README.md

Author: swhitley

README.md

@@ -14,7 +14,7 @@ Here are a few ideas. (Care to add to this list in the discussions?)
 
 ## Installation
 
-1. Download the [latest release](https://github.com/swhitley/CLARiNET/releases/latest) for your operating system.
+1. Download the [latest release](https://github.com/swhitley/CLARiNET/releases/latest) for your operating system (Mac or Windows).
 3. Unzip the executable files into a new directory.
 4. Run `clarinet --help` to view the available options.
 5. You may need to install the [dotnet core runtime](https://dotnet.microsoft.com/download/dotnet/5.0/runtime).