增加广播秤、八电极秤和蓝牙WiFi牙刷SDK的使用说明

AILinkBleSDKDemo.xcodeproj/project.pbxproj

 		E680BF1D2510576D005AD827 /* 广播体脂秤 */ = {
 			isa = PBXGroup;
 			children = (
-				E680BF1E2510576D005AD827 /* BroadcastScaleViewController.m */,
 				E680BF1F2510576D005AD827 /* BroadcastScaleViewController.h */,
+				E680BF1E2510576D005AD827 /* BroadcastScaleViewController.m */,
 			);
 			path = "广播体脂秤";
 			sourceTree = "<group>";

READMD_CN.md

     return user;
 }
 ```
+### 十三、广播体脂秤
+#### 1.文件说明
+>* `ELBroadcastScaleBleHeader `一些用到的枚举;
+>* `ELBroadcastScaleBleManager`续承自`ELBluetoothManager`的类，用于扫描附近设备和接收数据;
+>* `ELBroadcastScaleDataModel`广播秤的数据结构模型.
+
+#### 2.使用范例Demo
+打开`AILinkBleSDKDemo_iOS`，运行到手机上，选择`集成广播秤`，参照`BroadcastScaleViewController.m`的使用.
+
+### 十四、八电极体脂秤
+#### 1.文件说明
+>* `ELEightScaleSDKHeader `一些用到的枚举和数据结构;
+>* `ELEightScaleBleManager`续承自`ELBluetoothManager`的类，用于扫描附近设备、连接设备、接收数据和发送数据给设备;
+>* `ELEightScaleBleDataModel`称量结果的数据结构模型.
+
+#### 2.使用范例Demo
+打开`AILinkBleSDKDemo_iOS`，运行到手机上，选择`八电极体脂秤`，参照`EightScaleScanViewController.m`和`EightScaleConnectionViewController.m`的使用.
+
+### 十五、蓝牙WiFi牙刷
+#### 1.文件说明
+>* `ELToothburshHeader`一些用到的枚举和数据结构;
+>* `ELToothbrushBleManager`续承自`ELBluetoothManager`的类，用于扫描附近设备、连接设备、接收数据和发送数据给设备.
+
+#### 2.使用范例Demo
+打开`AILinkBleSDKDemo_iOS`，运行到手机上，选择`蓝牙WiFi牙刷`，参照`ToothbrushScanViewController.m`和`ToothbrushConnectionViewController.m`的使用.
+
 #### 6.说明
 体脂秤需要从设备读取支持的体重单位，单位切换时要以支持的单位为准
 

README.md

     return user;
 }
 ```
+
+### Broadcast Body Fat Scale
+#### 1. File description
+>* `ELBroadcastScaleBleHeader` some enumerations used;
+>* `ELBroadcastScaleBleManager` continues from the class of `ELBluetoothManager`, used to scan nearby devices and receive data;
+>* `ELBroadcastScaleDataModel` The data structure model of the broadcast scale.
+
+#### 2. Use example Demo
+Open `AILinkBleSDKDemo_iOS`, run it on the phone, select `集成广播秤`, refer to the use of `BroadcastScaleViewController.m`.
+
+### Eight electrode body fat scale
+#### 1. File description
+>* `ELEightScaleSDKHeader `Some enumerations and data structures used;
+>* `ELEightScaleBleManager` continues from the class of `ELBluetoothManager`, used to scan nearby devices, connect devices, receive data and send data to devices;
+>* `ELEightScaleBleDataModel` The data structure model of the weighing result.
+
+#### 2. Use example Demo
+Open `AILinkBleSDKDemo_iOS`, run it on the phone, select `八电极体脂秤`, refer to the use of `EightScaleScanViewController.m` and `EightScaleConnectionViewController.m`.
+
+### Bluetooth WiFi toothbrush
+#### 1. File description
+>* `ELToothburshHeader` some enumerations and data structures used;
+>* `ELToothbrushBleManager` continues from the class of `ELBluetoothManager`, used to scan nearby devices, connect devices, receive data and send data to devices.
+
+#### 2. Use example Demo
+Open `AILinkBleSDKDemo_iOS`, run it on the phone, select `蓝牙WiFi牙刷`, refer to the use of `ToothbrushScanViewController.m` and `ToothbrushConnectionViewController.m`.
+
 #### 6.Explanation
 The body fat scale needs to read the supported weight unit from the device. When the unit is switched, the supported unit shall prevail