Rework to use new apt/yum repositories

   * Context-based installation of packages from installer based on
     {{ ansible_distribution }}
   * Removal of Vagrantfile
   * Update of README.md

The Vagrantfile has been removed as part of packaging this for Ansible
Galaxy ( https://galaxy.ansible.com/ ).
bad wording in README.md
Merge pull request #2 from proffalken/master

Rework for apt/yum packages