docs: update readme

README.md

@@ -3,6 +3,8 @@
 The official SDK for creating
 [Open Commissioning Assistant](https://github.com/OpenCommissioning/OC_Assistant) plugins.
 
+[![NuGet Status](https://img.shields.io/nuget/v/OC.Assistant.Sdk.svg)](https://www.nuget.org/packages/OC.Assistant.Sdk/)
+
 ### Quick Getting Started:
 1. Create a ```Class Library``` project with target framework ```.NET8``` or ```.NET Framework 4.8.1```
 2. Add the ```OC.Assistant.Sdk``` package via nuget
@@ -23,4 +25,4 @@ To run your plugin, simply place your *.dll and *.plugin files in the directory
 
 Further details how to use ```Attributes```, ```Properties``` and ```Methods``` can be found within the SDK. \
 You can also learn how to build your own plugin by reviewing existing ones on our [Open Commissioning GitHub page](https://github.com/OpenCommissioning). \
-Also check out our [YouTube channel](https://www.youtube.com/@OpenCommissioning) for upcoming tutorials.
+Also check out our [YouTube channel](https://www.youtube.com/@OpenCommissioning) for upcoming tutorials.