The README for Iris currently has a link to the documentation for the latest release of Iris. However it would also be useful to link to the documentation for the latest master of Iris. This link is available in the repo Wiki, but not the README.

For instance this is implemented by Matplotlib with their devdocs -> https://matplotlib.org/devdocs/index.html