Create Readme with status and instructions

[iainctduncan]

it would be good to have a Readme that explains status of the project, how to install, and the fact that despite no release since 2019, it "just works" with the latest Csound installed on the system.

I can do this so will assign to myself.

[shakfu]

Hi Iain ,

FYI, I've done some work on this just now (see my recent post # 15) in case you are interested. It would be nice to get some feedback, but there doesn't seem to much activity here.