Add CI badge

README.md

@@ -1,5 +1,7 @@
 # ML.NET Samples
 
+[![](https://dotnet.visualstudio.com/_apis/public/build/definitions/9ee6d478-d288-47f7-aacc-f6e6d082ae6d/22/badge)](https://dotnet.visualstudio.com/public/_build/index?definitionId=22 )
+
 [ML.NET](https://www.microsoft.com/net/learn/apps/machine-learning-and-ai/ml-dotnet) is a cross-platform open-source machine learning framework that makes machine learning accessible to .NET developers.
 
 ML.NET samples are divided in three categories: