https://github.com/neovim/neovim/wiki/Installing-Neovim
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:neovim-ppa/unstable
sudo apt-get update
sudo apt-get install neovim
mkdir ~/.config
ln -s ~/.vim ~/.config/nvim
ln -s ~/.vimrc ~/.config/nvim/init.vim