I'm happy to see code and data shared in a recent paper I read. And while I am very supportive of the authors' sharing code, the README is much better as a Markdown file than a PDF called "README.pdf" and the repository should ideally be archived with osf.io or better zenodo.org, which integrates seamlessly with GitHub w/ a DOI minted
Still, sharing this is a HUGE improvement over doing nothing. These are small ways that would improve the reproducibility and accessibility. #ReproducibleResearch