Update Readme.md

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Readme.md

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 # WinBioNET
-Managed wrapper in C#/NET for the Windows Biometric Framework.
+|   | Build & Test |
+|---|:-----:|
+|**Windows**|![Build & Test](https://nuno0529.visualstudio.com/_apis/public/build/definitions/981d161d-2038-4d2d-97b7-b799b399e414/7/badge?branch=master)| 
+
+Managed wrapper in C#/NET for the Windows Biometric Framework.