Add a Versioning section to README

README.md

@@ -20,10 +20,18 @@ and natural language processing.
 Install it via the NuGet Package Manager by searching for `ClarifaiGrpc`, or use one of the commands below.
 
 ```
-Install-Package ClarifaiGrpc
 dotnet add package ClarifaiGrpc
+
+Install-Package ClarifaiGrpc
 ```
 
+## Versioning
+
+This library doesn't use semantic versioning. The first two version numbers (`X.Y` out of `X.Y.Z`) follow the API (backend) versioning, and
+whenever the API gets updated, this library follows it.
+
+The third version number (`Z` out of `X.Y.Z`) is used by this library for any independent releases of library-specific improvements and bug fixes.
+
 ## Getting started
 
 Construct the client and setup your API key or Personal Access Token in the `metadata` variable.