add mipay文档

AllPay_Integration_Specification_CH.md

@@ -427,6 +427,24 @@ SMS Code on Mobile: 123456
 
  获取到tn后，根据[Android对接文档](https://git.allpayx.com/OpenAPI/common/src/master/v5/android/Android_Integration_Specification_CH.md)调用SDK进行支付
 
+
+
+### 5.7 MIPAY渠道
+
+#### 5.7.1 H5支付
+
+ 消费接口专属字段
+
+| 参数       | 类型   | 属性 | 描述                                                         |
+| ---------- | ------ | ---- | ------------------------------------------------------------ |
+| tradeFrom  | String | M    | "H5"                                                         |
+| firstname  | String | M    | This is name of the customer who is doing the transaction.   |
+| email      | String | M    | this is email id of the customer who is doing transaction    |
+| phone      | String | M    | Phone number of the customer                                 |
+| customerId | String | O    | Customer ID, when client register on merchant, merchant distribute it to client. |
+
+
+
 ## 6.应答码 
 
 | 应答码 | 描  述      |

paymentSchema.md

@@ -6,3 +6,4 @@ Serial number |Channel name  |Channel ID|Remark
  3 | Alipay |AP/APMP| Alipay
  4 | UnionPay |UP| UnionPay
  5 | Apple Pay |APP| Apple Pay
+ 6 | MiPay |MIPAY| 小米支付