Created 资源预下载 (markdown)

+学生端课表返回内容
+```
+{
+    "data": {
+        "2016-04-12": [
+            {
+                "id": 338345,
+                "courseType": "听力",
+                "time": "14:00:00",
+                "courseId": "L3NoYXJlL3N2bi_ku4HniLHkuIPkuIog5ZCs6K-7LzAzMi5Vbml0IDMgVG9waWMgMyBXaGF0IHdvdWxkIHlvdSBsaWtlIHRvIGRyaW5rPy54bHN4"
+            },
+            {
+                "id": 338346,
+                "courseType": "听力",
+                "time": "15:00:00",
+                "courseId": "L3NoYXJlL3N2bi_ku4HniLHkuIPkuIog5ZCs6K-7LzAzMi5Vbml0IDMgVG9waWMgMyBXaGF0IHdvdWxkIHlvdSBsaWtlIHRvIGRyaW5rPy54bHN4"
+            },
+            {
+                "id": 338347,
+                "courseType": "听力",
+                "time": "16:00:00",
+                "courseId": "L3NoYXJlL3N2bi_ku4HniLHkuIPkuIog5ZCs6K-7LzAzMi5Vbml0IDMgVG9waWMgMyBXaGF0IHdvdWxkIHlvdSBsaWtlIHRvIGRyaW5rPy54bHN4"
+            }
+        ]
+    },
+    "returnCode": 200,
+    "returnMsg": "success"
+}
+```