Vimdiff as an Alternative for README

[Benjamin Kane]

I have the following in my ~/.gitconfig:

[alias]
	# already have gruvbox plugin as a really good diffing colorscheme
	vimdiff = difftool --no-prompt --extcmd 'nvim -d'

Which produces a diff like:

$ git vimdiff HEAD~1 HEAD

You can also replace nvim with vim, of course

This might be worth adding to the "Acknowledgements" section of the README

[Benjamin Kane]

Closing due to age