add api

+### 小班课后台接口文档
+
+
+
+##### 1. 创建班级接口
+
+URL: {{localhost}}/boxfish-online-card/classSmall/manager/addClass
+Method: POST
+RequestBody:
+
+```json
+{
+	"operationAccount":"zhangwang@boxfish.cn",
+	"name":"五年级下-4月班级BAKKK",
+	"englishName":"GRADE_5_B Junly small calss",
+	"grade":"GRADE_5_B",
+	"mentorName":"张旺老师",
+	"classOpenTime":1554134400000,
+	"classCloseTime":1556640000000,
+	"scheduleList":[
+		{
+			"classType":"CLASS_SMALL_CN",
+			"weekend":"TUESDAY",
+			"scheduleStartTime":1554199200000,
+			"scheduleEndTime":1554200700000,
+			"scheduleDeadTime":1554201000000
+		},
+		{
+			"classType":"CLASS_SMALL_US",
+			"weekend":"FRIDAY",
+			"scheduleStartTime":1554204600000,
+			"scheduleEndTime":1554206100000,
+			"scheduleDeadTime":1554199200000
+		}
+	]
+}
+``` 
+
+ResponseBody:
+
+```json
+{
+    "status": "SUCCESS",
+    "message": "添加课程成功"
+}
+```