Fix `gdv`: make it a function, and use `view`.
Fix `gdv`: make it a function, and use `view`.

I've changed it to use `view` instead of `vim -R` to make it hopefully
more editor-agnostic.

ammula88/oh-my-zsh,ammula88/oh-my-zsh,ammula88/oh-my-zsh,ammula88/oh-my-zsh