After you've installed nvim do an alias so nvim is called automatically:
alias vim=nvimApparently the folder ~/.vim needs to be mapped to ~/.config/nvim since that's where nvim lives,
then also the .vimrc to the init.vim (recommend: back it up first just in case)
ln -s ~/.vim ~/.config/nvim
ln -s ~/.vimrc ~/.config/nvim/init.vim