Compared to v0.2-rc, the v0.2 release implements a few more quality of
life features, without huge features being introduced:

* More clearer README file, with a description and installation steps
  for the setup script
* Move all the variables (including repo links, versions, commands,
  user specific setups etc.) into a separate `HOSTS_VARS` file, meant
  to act as an interface with the user
* Guard the install script against unknown operating systems, alerting
  the user if that is the case
* Change all `include`'s to `include_tasks`'s, due to being deprecated
  by Ansible