Suggested Readme improvements

[tasminmin]

As part of a Documentation quality analysis project led by ARC, we've found this repository could be improved in the following areas by:

• Consider including whether using GenAI is acceptable for contributions
• Providing a DOI in the citation snippet will help to the researchers to find the object you'd like to be cited

If you need help with anything of the the above, join one of ARC Drop-in sessions and one of our team members will help you.