sdk upgrade

@@ -23,6 +23,7 @@
       * [6. 其他配置](#6-其他配置)
          * [6.1. APNs](#61-apns)
          * [6.2. Background Modes](#62-background-modes)
+         * [6.3. 扩展参数](#63-extension-params)
       * [问题说明](#问题说明)
          * [支付宝 SDK 冲突](#支付宝-sdk-冲突)
          * [swift 4.1](#swift-41)
@@ -291,6 +292,17 @@ func application(_ application: UIApplication, didRegisterForRemoteNotifications
 xxx target -> Capabilities -> Background Modes -> 勾选 Audio，Airplay and Picture in Picture
 ```
 
+### 6.3. 扩展参数
+
+为了支持收集渠道日志，SDK支持在初始化时传递自定义参数。
+
+```
+let option = HHSDKOptions(productId: "3000", isDebug: true, isDevelop: true)
+option.asyncLogin = false
+option.mExtension = ""
+
+```
+
 
 ## 问题说明