You need to have the following software installed:
- Vagrant >= 1.9.0
- Virtualbox >= 5.0
First of all, open Vagrantfile and change the ID to your current user. To get that ID, run id -u (on Mac OS X and Linux).
Afterwards, run vagrant up to in this directory to get a working machine. This will create a new Virtualbox VM based on a customized Ubuntu 16.04 image, install Ansible and then provision the machine.
If you change any configuration after the initial setup has run, re-provision the machine using vagrant provision.