installs brew, virtualbox, and vagrant in osx

installvagrant

if ! type "brew" > /dev/null; then
  /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
fi
brew install git cask brew-cask-completion &&
brew cask install vagrant virtualbox && 
vagrant plugin install vagrant-berkshelf vagrant-hostmanager vagrant-hostsupdater vagrant-omnibus vagrant-share vagrant-vbguest;