Add gif to README.md

Author: EnoxSoftware

README.md

@@ -1,7 +1,8 @@
 # Ffmpeg With OpenCVForUnity Example
+![FfmpegWithOpenCVForUnityExample](https://user-images.githubusercontent.com/7920392/221954204-416c4240-fb9b-4346-a36a-9f0951666ca4.gif)
 
 ## Overview
-- Integrate "FFmpeg for unity" with "OpenCV for Unity".
+- Integrate "FFmpeg for Unity" with "OpenCV for Unity".
 - Replace WebCamTextureToMatHelper with FfmpegToMatHelper.
 - Video from a network camera (distributed via RTSP) is received by ffmpeg, converted to OpenCV's Mat class, and image processing is performed.