Add status badge

Author: AnimMouse

README.md

@@ -1,5 +1,8 @@
 # FFmpeg Latest Autobuilds for Windows
 
+![Build FFmpeg on push](https://github.com/AnimMouse/ffmpeg-autobuild/workflows/Build%20FFmpeg%20on%20push/badge.svg)
+![Build FFmpeg on pull request](https://github.com/AnimMouse/ffmpeg-autobuild/workflows/Build%20FFmpeg%20on%20pull%20request/badge.svg)
+
 [FFmpeg](https://ffmpeg.org/) latest development builds with additional libraries/dependencies.
 
 Powered by [ffmpeg-windows-build-helpers](https://github.com/rdp/ffmpeg-windows-build-helpers) script to cross compile for Windows on Linux.