Update README.md

Author: mediumTaj

README.md

@@ -352,6 +352,9 @@ private void OnGetToken(AuthenticationToken authenticationToken, string customDa
 }
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+## Streaming outside of US South region
+Watson services have upgraded their hosts to TLS 1.2. The US South region has a TLS 1.0 endpoint that will work for streaming but if you are streaming in other regions you will need to use Unity 2018.2 and set Scripting Runtime Version in Build Settings to .NET 4.x equivalent. In lower versions of Unity you will need to create the Speech to Text instance in US South.
+
 ## Documentation
 Documentation can be found [here][documentation]. You can also access the documentation by selecting API Reference the Watson menu (**Watson -> API Reference**).