Update README.md

Add instruction of loading  data

README.md

@@ -7,6 +7,12 @@ TopoBERT is aimed at NLP practitioners who want to explore the fine-tuning proce
 ## Requirements
 TopoBERT requires python 3.6 and node.js 8.11.0 or higher.
 
+## Data Loading
+ * Go to repo-root/backend
+ * Create a folder ```data```
+ * Download all datasets from https://drive.google.com/drive/folders/1va-BA6DPkWqt5tke7kDM3U8iDh9hJTw-?usp=sharing 
+ * Extract and put the datasets under the foler  ```data/```
+
 ## Installation
 Start the server
 
@@ -24,4 +30,4 @@ npm install
 npm run dev
 ```
 
-Open the browser and navigate to the URL provided by the server (typically http://localhost:3000).
+Open the browser and navigate to the URL provided by the server (typically http://localhost:3000).