building a base box

 On branch master

	modified:   .gitignore
	new file:   bin/devbox
	new file:   completions/devbox.bash
	new file:   completions/devbox.zsh
	new file:   docs/create-new-vagrant-box.md
	new file:   libexec/devbox
	renamed:    libexec/jfd-system-update -> libexec/devbox-build
	new file:   libexec/devbox-commands
	new file:   libexec/devbox-completions
	new file:   libexec/devbox-help
	new file:   libexec/devbox-init
	new file:   libexec/devbox-sh-shell
	renamed:    Vagrantfile -> virtual_machines/base/Vagrantfile
	new file:   virtual_machines/devbox/Vagrantfile