Update README.md

README.md

@@ -49,6 +49,8 @@ The dataset is organized as follows:
 ```
 AstroM3Dataset/
 ├── photometry.zip             # Contains all photometry light curves
+├── utils/
+│   ├── parallelzipfile.py     # Zip file reader to open photometry.zip
 ├── spectra/                   # Spectra files organized by class
 │   ├── EA/
 │   │   ├── file1.dat