brew --with-default-names option is deprecated

[smukkejohan]

dotfiles/config.js

Line 21 in ed59131

'gnu-sed --with-default-names',

Homebrew/homebrew-core@43f2e19

Sems --with-default-names option has ben dropped and they instruct to add to path instead. Probably need to add PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH" somewhere instead.

This causes .gitconfig replacements with sed to fail for me when running .install.sh