modified instructions for adding new projects on GIN

CONTRIBUTING.md

@@ -267,8 +267,8 @@ To add a new poject, you will need to:
 2. Ask to be added as a collaborator on the [WAZP data repository](https://gin.g-node.org/SainsburyWellcomeCentre/WAZP) (if not already)
 3. Download the [GIN CLI](https://gin.g-node.org/G-Node/Info/wiki/GIN+CLI+Setup#quickstart) and set it up with your GIN credentials, by running `gin login` in a terminal.
 4. Clone the WAZP data repository to your local machine, by running `gin get SainsburyWellcomeCentre/WAZP` in a terminal.
-5. Add your new projects, followed by `git add`, and `git commit`, just like you would with a GitHub repository. Make sure to follow the [project ornanisation](#project-organisation) as described above. Don't forget to modify the README file accordingly.
-6. Upload the commited changes to the GIN repository, by running `gin upload`. Latest changes to the repository can be pulled via `gin download`. `gin sync` will synchronise the latest changes bidirectionally.
+5. Add your new projects, followed by `gin commit -m <message> <filename>`. Make sure to follow the [project organisation](#project-organisation) as described above. Don't forget to modify the README file accordingly.
+6. Upload the committed changes to the GIN repository, by running `gin upload`. Latest changes to the repository can be pulled via `gin download`. `gin sync` will synchronise the latest changes bidirectionally.
 7. Determine the sha256 checksum hash of each new project archive, by running `sha256sum {project-name.zip}` in a terminal. Alternatively, you can use `pooch` to do this for you: `python -c "import pooch; pooch.file_hash('/path/to/file.zip')"`. If you wish to generate a text file containing the hashes of all the files in a given folder, you can use `python -c "import pooch; pooch.make_registry('/path/to/folder', 'hash_registry.txt')`.
 8. Update the `wazp.datasets.py` module on the [WAZP GitHub repository](https://github.com/SainsburyWellcomeCentre/WAZP) by adding the new projects to the `sample_projects` registry. Make sure to include the correct sha256 hash, as determined in the previous step. Follow all the usual [guidelines for contributing code](#contributing-code). Additionally, you may want to update the scripts in `scripts/generate_sample_projects`, depending on how you generated the new projects. Make sure to test whether the new projects can be fetched successfully (see [fetching projects](#fetching-projects) above) before submitting your pull request.