Update README.md

Author: Zerpico

README.md

@@ -1,4 +1,6 @@
 # FFmpeg-nuget-package
+[![main](https://github.com/Zerpico/FFmpeg-nuget-package/actions/workflows/package.yml/badge.svg)](https://github.com/Zerpico/FFmpeg-nuget-package/actions/workflows/package.yml)
+[![nuget](https://img.shields.io/nuget/v/FFmpeg.runtime.svg)](https://www.nuget.org/packages/FFmpeg.runtime/)  
 FFmpeg v.4.4 Auto-Builds nuget package
 
 - [FFmpeg latest release](https://github.com/Zerpico/FFmpeg-nuget-package/releases/latest)