A simple and modern ZSH theme inspired by robbyrussell's theme

1. mkdir $ZSH_CUSTOM/themes If the directory doesn't exists already
2. wget -O $ZSH_CUSTOM/themes/moderno.zsh-theme https://raw.githubusercontent.com/obrassard/moderno-zsh/master/moderno.zsh-theme
3. vi ~/.zshrc
4. Set your current theme by moderno : ZSH_THEME="moderno"