Merge branch 'v2.1' into 'master'

add SCNet and icon.png

See merge request !1

README.md

@@ -66,6 +66,16 @@ pip3 install -r conda_requirement.txt
 
 [标签数据](https://github.com/ultralytics/yolov5/releases/download/v1.0/coco2017labels.zip)
 
+或者通过SCNet下载[COCO2017](http://113.200.138.88:18080/aidatasets/coco2017)数据集：
+
+[训练数据](http://113.200.138.88:18080/aidatasets/coco2017/-/blob/main/train2017.zip)
+
+[验证数据](http://113.200.138.88:18080/aidatasets/coco2017/-/blob/main/val2017.zip)
+
+[测试数据](http://113.200.138.88:18080/aidatasets/coco2017/-/blob/main/test2017.zip)
+
+[标签数据](http://113.200.138.88:18080/aidatasets/coco2017/-/blob/main/annotations_trainval2017.zip)
+
 数据集的目录结构如下：
 
 ```