Update README.md

README.md

@@ -41,7 +41,16 @@ I've split away 1% of the images into a test set, and 1% into a validation set.
 The remaining 98% of the images comprise the training set.
 
 There is also accompanying metadata!
-The metadata is in parquet format in the root dir of this repo. 
+To combine the metadata with the galaxy images you can do (for example):
+```python
+from datasets import load_dataset, concatenate_datasets
+
+# Load the `galaxies' dataset with metadata
+metadata = load_dataset("Smith42/galaxies_metadata", streaming=True)
+galaxies = load_dataset("Smith42/galaxies", streaming=True)
+combined = concatenate_datasets([galaxies['train'], metadata['train']])
+```
+The metadata is also available in parquet format in the root dir of this repo. 
 You can link the metadata with the galaxies via their dr8_id.
 
 ## Useful links