Please pull r2.1.0

Andy, this is your release 2.1.0 code, pushed and tagged. I wanted it in Github before I start to work with it. My repo is a clone of your placeholder, with your code added. In addition, I converted your README.txt to markdown, and removed the execute modes from normal files, to avoid inadvertent executions. If you want some files to be executable, please re-enable that! Otherwise it's exactly as per your released version. It's tagged r2.1.0, as a base for me to add my branch.