Add more examples to readme

[Ahmet Alp Balkan]

First use case that comes to mind is from Agones. Paging @markmandel to kindly provide one. :) If I can get access to cluster I can shoot the screenshot myself too, otherwise (using iterm2 on mac, a window screenshot):

PS1="$(echo;echo)$(tput setaf 3)\$ $(tput sgr0)"