An improved, fully self-contained version

[earwin]

In case anybody needs it: https://gist.github.com/earwin/1f722d8f4bcf1ea3d3fa72a468f87a0a

Compared to original:

• is a single file that can install and uninstall itself
• works with any shell (tested bash, zsh, fish, xonsh)
• doesn't parse any shell init-scripts, so doesn't fail on includes or unexpected syntax

(ruby snippet borrowed from https://github.com/mexisme/osx-env-sync)