Updated CONTRIBUTING.md

CONTRIBUTING.md

@@ -20,6 +20,20 @@ dataset = load_dataset("../.", split="train")
 
 > Note: While it is local Huggingface still uses a cache, therefore you might need to reset it after changes have been made to see that it works correctly. You can do this by deleting the cached files which you can locate using `dataset.cache_files`.
 
+## Adding a new dataset
+
+To add a new dataset you will have to create a folder under `data/{dataset_name}/`, which should look as follows:
+
+```
+  data/dataset_name
+  |- dataset_name.md
+  |- dataset_name.parquet
+  |- create.py               # optional
+```
+
+The create.py is an optional python script that allow you to recreate the dataset from the source. This is typically to allow us to reproduce the 
+dataset with fixes or update the dataset to the latest version using an API.
+
 ## Installing dependencies
 
 This repo comes with a few dependencies you need to install to make this run. It uses a [makefile](https://opensource.com/article/18/8/what-how-makefile) to run commands and a [uv](https://docs.astral.sh/uv/) for package management. Once you have uv installed you can install the dependencies using:
@@ -58,6 +72,7 @@ Before you make the PR do be sure to make sure that you have completed the follo
 - [ ] I have added/changed a dataset and have
   - [ ] I have updated descriptive statistics using `make update-descriptive-statistics`
   - [ ] I have bumped the version use `make bump-version`
+- [ ] If I have added a `create.py` script I have added the [script dependencies](https://docs.astral.sh/uv/guides/scripts/#declaring-script-dependencies) required to run that script.
 
 ### Examples of Previous PRs
 To see example PR you can see the following: