I just want to bring your attention on a pull request that has been opened on the BIDS starter kit to design a template README to help provide more information on the content of a dataset.
If you have suggestions or examples of good READMEs for a dataset feel free to chime in, preferably in the conversation of the pull request ( ).
You can also directly contribute to that pull request: if you have no idea on how to do that because of the whole Git and Github thing, get in touch and I can gladly help you with it.