brew cask install iterm2
sh -c "$(curl -fsSL https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
Install zsh-syntax-highlighting
$>
brew install zsh-syntax-highlighting
Add below line to the end of .zshrc
source /usr/local/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh