Great tip. Thanks!
@maximhoffman the background image is a custom image configured in the iTerm2. As for the arrow be sure to use powerline patched fonts.
@jacaetevha I don't have any Ruby specific aliases or scripts. I use Zeus on my Rails development. Zeus provides lots of useful aliases.
@danielcsgomes: they were indicators from others scripts I used to have at the moment I took the screenshot. On was a Python battery indicator and the flag was an online/offline indicator. I removed them when I switched to a lower screen resolution.
One problem I had with them was that I couldn't refresh them. Sorry for the misleading picture.
@danielcsgomes: I didn't thought about that. I will though... Thanks.
@danielcsgomes: fonts patch info is available here: https://github.com/milkbikis/powerline-shell
@diosan: great article mate.