Update README.md

add data download link

Author: taigw

README.md

@@ -14,6 +14,10 @@ To use the latest development version, you can download the source code [here][P
 python setup.py install
 ``` 
 
+## Data
+The datasets for the examples can be downloaded from [Google Drive][google_link] or [Baidu Disk][baidu_link] (extraction code: n07g). Extract the files to `PyMIC_data` after the download. 
+
+
 ## List of Examples
 
 Currently we provide the following examples in this repository:
@@ -30,6 +34,8 @@ Currently we provide the following examples in this repository:
 |Noisy label learning|[seg_nll/JSRT][nll_jsrt_link]|Comparing different NLL methods for learning from noisy labels|
 
 [PyMIC_link]: https://github.com/HiLab-git/PyMIC
+[google_link]:https://drive.google.com/file/d/1-LrMHsX7ZdBto2iC1WnbFFZ0tDeJQFHy/view?usp=sharing
+[baidu_link]:https://pan.baidu.com/s/15mjc0QqH75xztmc23PPWQQ 
 [AntBee_link]:classification/AntBee
 [CHNCXR_link]:classification/CHNCXR
 [JSRT_link]:segmentation/JSRT
@@ -40,3 +46,6 @@ Currently we provide the following examples in this repository:
 [wsl_acdc_link]:seg_wsl/ACDC 
 [nll_jsrt_link]:seg_nll/JSRT
 
+## Useful links
+PyMIC on Github: https://github.com/HiLab-git/PyMIC
+Usage of PyMIC: https://pymic.readthedocs.io/en/latest/usage.html