update doc api

+[![996.icu](https://img.shields.io/badge/link-996.icu-red.svg)](https://996.icu)
+
+
+### 四会课程 小程序领取接口0719
+
+
+##### 1. 微信用户登录，跟原来接口一样
+
+- URL: {{localhost}}/boxfish-online-card/wxUser/userLogin
+- Method: POST
+- RequestBody:
+
+```json
+{
+  // 登录凭证
+  "jsCode": "wx_jsCode",
+  // 用户信息
+  "nickName": "user_nickName",
+  "avatarUrl":"user_avatarUrl"
+}
+```
+
+- ResponseBody:
+
+```json
+    // status
+    private ResponseStatus status;
+    private String message;
+    // body
+    private String openId;
+    private String wxToken;
+```
+
+##### 2. 通过邀请码，建立邀请关系
+
+- URL: {{localhost}}/boxfish-online-card/wx_mini/addUserRelationship/v2
+- Method: POST
+- RequestBody:
+
+```json
+{
+    "openId": "user_openId",
+    "invitationCode": "invitation_code"
+}
+```
+
+- ResponseBody:
+
+```java
+public static class Response {
+    // status
+    private ResponseStatus status;
+    private String message;
+
+    // 邀请人信息
+    private String invitationOpenId;
+    private String invitationNickName;
+    private String invitationAvatarUrl;
+}
+```
+
+##### 3. 用户查询领取信息接口
+
+- URL: {{localhost}}/boxfish-online-card/order/mini/getUserObtainSummary
+- Method: POST
+- RequestBody: 
+
+```json5
+{
+  "userOpenId": "open_id_userOpenId"
+}
+```
+
+- ResponseBody:
+
+```json5
+{
+  "status": "SUCCESS",
+  "userObtainWordCourse": true,
+  "userObtainExperienceCourse": false,
+  "userType": "BUSINESS",
+  "invitationList": [
+    {
+      "openId":"invitation_openId",
+      "nickName": "张三",
+      "avatarUrl": "avatar_avatarUrl",
+      "flagPlaceOrder": true,
+      "orderTime": "2019-07-19 00:00:11"
+    }
+  ]
+}
+```
+
+
+