Just like this post I have been traditionally a windows user and would like to have my buttons on the right hand side.
I couldn't find org.pantheon.desktop.gala.appearance button-layout but did have org.gnome.desktop.wm.preferences button-layout. I changed the settings to **':minimize,maximize,close'* logged out and nothing and then restarted and nothing. The settings are there but have not taken effect.
Im on OS X El Capitan and used the gsettings set org.gnome.desktop.wm.preferences button-layout :minimize,maximize,close command. I have read online that this particular version was designed to block customization much more than previously available and have not been able to find a working solution online.