Update README.md

Author: liulingfeng

README.md

@@ -29,6 +29,16 @@ react-native link react-native-alive-view
 ```js
 const NTESRNLiveDetectView = requireNativeComponent('RNAliveView');
 ```
+回调
+onActionChange: (e: {nativeEvent: {actions: string}}) => void;
+onWarnChange: (e: {nativeEvent: {message?: string}}) => void;
+onStepChange: (e: {
+    nativeEvent: {message?: string; currentStep: number};
+  }) => void;
+  onResultChange: (e: {
+    nativeEvent: {message?: string; token?: string};
+  }) => void;
+
 ### 活体检测操作
 
 ```js
@@ -43,11 +53,6 @@ import {NativeModules} from 'react-native';
 *方法描述：*
 开始活体检测
 
-*参数说明：*
-```
-businessId: '从易盾申请的id',
-callback -- 初始化结果回调
-
 ### stopAlive()
 *方法描述：*
 关闭活体检测