Update Readme.md

electricessence · web-flow · commit 83aeaec63999 · 2020-07-11T09:31:58.000-07:00
diff --git a/Readme.md b/Readme.md
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 # Open.Hierarchy
 
-[![NuGet](http://img.shields.io/nuget/v/Open.Hierarchy.svg)](https://www.nuget.org/packages/Open.Hierarchy/)
+![.NET Core](https://github.com/Open-NET-Libraries/Open.Hierarchy/workflows/.NET%20Core/badge.svg) [![NuGet](http://img.shields.io/nuget/v/Open.Hierarchy.svg)](https://www.nuget.org/packages/Open.Hierarchy/)
 
 ## `Node<T>`
 
