Sharing gulp projects with other devs can be pain, because you need to tell them to have node, brew, etc. installed. This script does that for them.

gistfile1.sh

#!/bin/sh

if ! brew_loc="$(type -p "brew")" || [ -z "brew_loc" ]; then
    ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
else
    printf "\e[0;32mBrew\e[0m already installed.\n"
fi

printf "Updating \e[0;32mBrew\e[0m...\n\n"

brew update

printf "\n\e[0;32mBrew\e[0m updated.\n"

if ! node_loc="$(type -p "node")" || [ -z "node_loc" ]; then
    brew install node
else
    printf "\e[0;32mnode.js\e[0m already installed.\n"
fi

if ! bower_loc="$(type -p "bower")" || [ -z "bower_loc" ]; then
    npm install -g bower
else
    printf "\e[0;32mBower\e[0m already installed.\n"
fi

if ! gulp_loc="$(type -p "gulp")" || [ -z "gulp_loc" ]; then
    npm install -g gulp
else
    printf "\e[0;32mGulp\e[0m already installed.\n"
fi

bower install
sudo npm install
gulp