Merge pull request #46 from MKhalusova/readme-update

Updates to contribution guidelines

README.md

@@ -31,10 +31,32 @@ following qualities:
 
 When contributing a new example/guide, open a pull request and tag [@MKhalusova](https://github.com/MKhalusova) for a review.
 
-If using any images in the markdown, upload them to 
-the [huggingface/cookbook-images](https://huggingface.co/datasets/huggingface/cookbook-images) dataset. Then use the 
-link to the image in your markdown, e.g.:
+Here are some tips:
 
+* Make sure that your notebook's file name is in lowercase.
+* Don't forget to add your notebook to the `_toctree.yml` and to `index.md`.
+* Right after the notebook's first header, add yourself as an author like this: `_Authored by: [Aymeric Roucher](https://huggingface.co/m-ric)_`. You can link to your Hugging Face profile, or to your GitHub profile.
+* Remove non-informative code cell outputs (e.g. from `pip install`). Make sure the notebook doesn't contain any empty code cells.
+* If using any images in the markdown, upload them to the [huggingface/cookbook-images](https://huggingface.co/datasets/huggingface/cookbook-images) dataset. Then use the link to the image in your markdown, e.g.:
 ```![RAG diagram](https://huggingface.co/datasets/huggingface/cookbook-images/resolve/main/rag-diagram.png)```
 
 Once your pull request is merged, the notebook will show up in the [Open-Source AI Cookbook](hf.co/learn/cookbook).
+
+### Translating the Cookbook into your language
+
+We'd love to have the Cookbook to be available in many more languages! Please follow the steps below if you'd like to 
+help translate the notebooks into your language 🙏.
+
+If some of the notebooks have already been translated into your language, add new translated notebooks 
+under `notebooks/your_language`. Don't forget to add the new translated notebook to `notebooks/your_language/_toctree.yml`,
+and to `notebooks/your_language/index.md`.
+
+If the notebooks have not yet been translated to your language, create a directory under `notebooks` with your `LANG-ID` 
+(e.g. see `en` for English, `zh-CN` for Chinese). The `LANG-ID` should be ISO 639-1 (two lower case letters) language 
+code -- see [here](https://www.loc.gov/standards/iso639-2/php/code_list.php) for reference. Alternatively, 
+`{two lowercase letters}-{two uppercase letters}` format is also supported, e.g. `zh-CN`.
+
+Create the `notebooks/LANG-ID/_toctree.yml`, and `notebooks/LANG-ID/index.md`, and add the translated notebook.
+
+Finally, add your language code (the exact same `LANG-ID`) to the `build_documentation.yml` and `build_pr_documentation.yml` 
+files in the `.github/workflows` folder.