docs(readme): add example and ref to extraction script

README.md

@@ -124,10 +124,26 @@ size_categories:
 
 # Dataset Card for Dataset Name
 
-<!-- Provide a quick summary of the dataset. -->
-
 This dataset is a port of the ["Animal Image Dataset"](https://www.kaggle.com/datasets/iamsouravbanerjee/animal-image-dataset-90-different-animals) that you can find on Kaggle.
 The dataset contains 60 pictures for 90 types of animals, with various image sizes.
 
+With respect to the original dataset, I created the train-test-split partitions (80%/20%) to make it compatible via HuggingFace `datasets`.
+
 **Note**. At the time of writing, by looking at the Croissant ML Metadata, the original license of the data is `sc:CreativeWork`. If you believe this dataset violates any license, please 
-do let me know so I can take it down as soon as possible.
+do let me know so I can take it down as soon as possible.
+
+## How to use this data
+
+```python
+from datasets import load_dataset
+
+# for exploration
+ds = load_dataset("lucabaggi/animal-wildlife", split=train)
+
+# for training
+ds = load_dataset("lucabaggi/animal-wildlife")
+```
+
+## How the data was generated
+
+You can find the script [here](./extract.py)