Load custom scripts from the given directory for zsh or bash

zsh-bash-custom-script.sh

# Add to the end of your ~/.zshrc or ~/.bashrc
# Note: $ln -s ~/Dropbox/dotfiles/zsh/config/ ~/.zsh.d
if [ -d ~/.zsh.d ]; then
  for i in ~/.zsh.d/*.sh; do
    if [ -r $i ]; then
      . $i
    fi
  done
  unset i
fi