Update README.md

dataset/README.md

@@ -1 +1,6 @@
-Please download the data sets at: http://43.138.115.238/download/febench/data/
+You may choose any one of the options to download the data set:
+- http://43.138.115.238/download/febench/data/  : This server is located China, the data is not compressed. You can use the following command to download all data to the local directory `dataset`
+``` bash
+wget -r -np -R "index.html*"  -nH --cut-dirs=3  http://43.138.115.238/download/febench/data/  -P ./dataset
+```
+- OneDrive (https://1drv.ms/f/s!At2bMwG7v7Dngbg21F0ELbZrhC7NBA?e=atHwQy): The file is compressed, please decompress after downloading