Refined NeoVim Experience for macOS
UPDATE: We recently, June 2016, started to migrate the VimR from MacVim backend to a NeoVim backend. We experimented with NeoVim a bit and now we are confident enough to think that VimR can be backed by NeoVim. If you want to live dangerously, then you can download the snapshot builds.
GitHub ProjectContributorsDocsIssuesSnapshot Builds • Created by Tae Won Ha
If you want to support the development of VimR financially, you can do it via Bountysource.

More description coming soon...

For the time being, you can go to the VimR's project page on Github.