Update ReadMe.md

adding dropbox link of pre-trained model

Author: kylekma

ReadMe.md

@@ -44,7 +44,7 @@ year = {2019}}
 - pip install -r requirements.txt
 - Install pytorch 0.41 or above
 - Make sure CUDA and cudnn are installed
-- Download preprocessed dataset and our model files: <a href="https://share.weiyun.com/5xRVfvP">weiyun</a>
+- Download preprocessed dataset and our model files: <a href="https://share.weiyun.com/5xRVfvP">weiyun</a> or <a href="https://www.dropbox.com/sh/06r3g02dyeyh5x5/AADFhwRuG_SPuGGwKx-SZLrna?dl=0">dropbox</a>
 - Download the source code and put the data file to the right location according to the code structure below
 
 ## Structure
@@ -140,4 +140,4 @@ Qualitative results from our original paper.
 
 ## Acknowledgement
 ----
-We thank the public <a href="https://wiki.cancerimagingarchive.net/display/Public/LIDC-IDRI">LIDC-IDRI dataset </a> that is used to build our algorithm. 
+We thank the public <a href="https://wiki.cancerimagingarchive.net/display/Public/LIDC-IDRI">LIDC-IDRI dataset </a> that is used to build our algorithm.