As a first step, it would be good to identify what we would like to leave in the README and what would be better served in the RTD site. This might need a discussion for us to decide, or there might be guidelines somewhere out there.
The actual moving of the information over should be much easier.
If appropriate, the information in the README might be better in the RTD site.
To get started on this issue, see the instructions in the documentation for improving the documentation.
As a first step, it would be good to identify what we would like to leave in the README and what would be better served in the RTD site. This might need a discussion for us to decide, or there might be guidelines somewhere out there.
The actual moving of the information over should be much easier.