Mac app based on platypus

[justjake]

TmuxIde.app: open files in Nvim + Tmux

I've started a project based on Appear's libraries to open files in Nvim +
Tmux. I prefer Tmux and terminal-based programs to GUI editors, so I've always
wanted to set console Vim as my default application for many filetypes.

I've built a proof-of-concept scipt that intelligently opens clicked files in
Nvim sessions inside Tmux windows. We use
Platypus to turn the script into a Mac native
app, and duti to assign our new app as the default
editor.

This project will eventually be split into its own repo, but lives in Appear
for now.

Set up Neovim:

1. set up Neovim
2. Set up Neovim Remote.
   Follow the nvr install instructions. Make sure the binary ends up in
   /usr/local/bin, /usr/bin, or /bin.
3. make sure you've got tmux in /usr/local/bin, too. brew install tmux if not.
4. stick this in your .bashrc or .zshrc so that each Neovim process gets it's own socket:
   bash mkdir -p "$HOME/.vim/sockets/" NVIM_LISTEN_ADDRESS="$HOME/.vim/sockets/vim-zsh-$$.sock"
   Without this snippet, we'll be unable to query or control existing nvim sessions.

Build the app:

1. brew install platypus, which is the app builder
2. bundle exec rake app builds into ./build/TmuxIde.app

Use it as the default for all of your source code files:

1. Notify OS X that your app exits by running it once, you can find it in
   ./build/TmuxIde.app. It'll display a dialog and then exit.
2. brew install duti, which is a tool we use to change default application for filetypes.
3. bundle exec rake app_defaults will assign all source code extensions to
   open in TmuxIde by default.

If you have any issues with the app, you can tail -f /tmp/tmux-ide-*.log to
view log messages.

Demo