Update README.md

Close the data download link temporarily.

README.md

@@ -20,7 +20,7 @@ To test the *[Psychopy](https://www.psychopy.org/)* setup, run *OnlineSystem.py*
     python3 OnlineSystem.py --cfg ./tests/test_stimulator.yml
 ```
 
-To reproduce the major results reported in the paper, download the data from this [link](https://drive.google.com/open?id=1KhsIW-D_Rl6g0l3u2FXpzeZfSxK-fmJI), decompress and put it under the data directory. Then
+To reproduce the major results reported in the paper, download the data from this [link](https://drive.google.com/open?id=1KhsIW-D_Rl6g0l3u2FXpzeZfSxK-fmJI) (Note that the link will be publicly available at the time of publication), decompress and put it under the data directory. Then
 simply run the notebook *figs_offline.ipynb*.
 
 If you would like to run your own online experiments, you could either use *NeusanW (Neuracle Inc.)*