Update README.md

Author: code-desc

CodeSummarization/data/README.md

@@ -3,15 +3,16 @@
 Data source: https://drive.google.com/file/d/14nHVljNMb37-tpOW59NaDY26T6z2BcXD/view?usp=sharing
 
 ## training procedure
-1. Extract the zip file in data/java
-2. Start training from scripts/java/transformer.sh 
+1. Install the required library from requirements.txt file inside `CodeSummarization` directory (pip install requirements.txt).
+2. Download the data source from above link. Then extract the zip file inside data/java.
+3. Start training from scripts/java/transformer.sh 
 run this command 
 ```bash
  transformer.sh 0 CoDescSum
  ```
-3. After two epoch terminate the terminal.
-4. Rename 'train' folder to 'pretrain' and rename 'finetune' to 'train'
-5. Run this again
+4. After two epoch terminate the terminal.
+5. Rename 'train' folder to 'pretrain' and rename 'finetune' to 'train'
+6. Run this again
 ```bash
  transformer.sh 0 CoDescSum
  ```