[osx] Execute brew cleanup after all installations
[osx] Execute brew cleanup after all installations

christophermoura/dotfiles,christophermoura/dotfiles,makabde/dotfiles,zlot/dotfiles,makabde/dotfiles,EDiLD/dotfiles,khornberg/dotfiles,mickael83/ubuntu-dotfiles,pbrooks/dotfiles,wingy3181/dotfiles,EDiLD/dotfiles,AlbertoElias/dotfiles,mickael83/ubuntu-dotfiles,sophatvathana/dotfiles,b-boogaard/dotfiles,newtonne/dotfiles,oddlord/dotfiles,AlbertoElias/dotfiles,zlot/dotfiles,girishramnani/dotfiles,wingy3181/dotfiles,wingy3181/dotfiles,newtonne/dotfiles,girishramnani/dotfiles