First OS-X build is up.
http://ge.tt/4hhqOtp1/v/0?c-Requires OS-X 10.7 or newer. (Was only tested on 10.9.4, so I really can't say if it even works on 10.7 or 10.8...)
-There's no fancy installer. You will have to go through the trouble of manually copying the plugin .dylib (after unzipping the zip file) file into the correct place on the file system. You will hopefully be able to find that by searching in the Reaper actions window for "resource" and then running the action. That opens a Finder window with a subfolder called "UserPlugins", the .dylib file should be copied into that subfolder.
-I was able to make the plugin GUI only work so that it stays on top of everything, which is very annoying, but less annoying than it disappearing behind Reaper’s window when clicking outside the plugin GUI…Hopefully that problem can be solved at some point.