update doc for publishing

+## 0.0.4
+
+- Fix native code for IOS , optimize processing
 ## 0.0.3
 
 - Fix native code, avoiding overload memory

 # processing_camera_image
 
-A new Flutter project.
+A Flutter plugin for Android and IOS for processing camera image with format YUV from camera plugin of google.
 
-## Getting Started
-
-This project is a starting point for a Flutter
-[plug-in package](https://flutter.dev/developing-packages/),
-a specialized package that includes platform-specific implementation code for
-Android and/or iOS.
-
-For help getting started with Flutter, view our
-[online documentation](https://flutter.dev/docs), which offers tutorials,
-samples, guidance on mobile development, and a full API reference.
+## Getting started
+- This pluin only process image camera with type YUV, please set format type of camera image if you use camera plugin of google.
+- I support export channel 8bit gray per pixel for processing face detecting .
 
+## IOS
+- Only use funtion with tag IOS ( except `processCameraImageToGray8Bit`).

@@ -204,7 +204,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.0.3"
+    version: "0.0.4"
   quiver:
     dependency: transitive
     description:

 name: processing_camera_image
 description: A new Flutter project.
-version: 0.0.3
+version: 0.0.4
 repository: https://github.com/thuanpham98/processing_camera_image
 homepage: https://github.com/thuanpham98/processing_camera_image