Volta should likely be replaced with fnm

[mikemitchel]

Word on the street is Volta is languishing and issues/bugs are not being resolved. The new hotness that seems easy, fast and to work very well is:

https://github.com/Schniz/fnm

On Mac, it's easiest to install and manage via Homebrew. brew install fnm via the terminal. Adding this to your .zshrc auto switches node on a cd into a directory with a .node-version file.

# fnm update node version on entering directory
eval "$(fnm env --use-on-cd)"