# add the repo
$ sudo add-apt-repository ppa:neovim-ppa/unstable
# update & install
$ sudo apt-get update
$ sudo apt-get install neovim
$ sh -c 'curl -fLo "${XDG_DATA_HOME:-$HOME/.local/share}"/nvim/site/autoload/plug.vim --create-dirs
https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'