Add 3rd party packages section

README.md

@@ -109,6 +109,11 @@ Body (or query for GET request)
   * `id`: ID of the shortened URL.
   * `domain` (optional):  Required if a custom domain is used for short URL.
   
+### 3rd Party API packages
+| Language  | Link                                                       | Description                                       |
+|-----------|------------------------------------------------------------|---------------------------------------------------|
+| C# (.NET) | [Nuget Package](https://www.nuget.org/packages/KuttSharp/) | Unofficial .NET package for Kutt.it url shortener |
+
 ## ShareX
 You can use Kutt as your default URL shortener in [ShareX](https://getsharex.com/). Please refer to our [ShareX wiki](https://github.com/thedevs-network/kutt/wiki/ShareX) for more informations.