release v1.8.0 (2015-09-03)

• Fix Chef Supermarket cookbook links.
• Add Windows support (issue #15, thanks Baptiste Courtois).
• Add Oracle Linux and Scientific Linux support.
• Improve platforms support using node['platform_family'] attribute.
• Documentation:
  • README:
  • Add ca path documentation to the namespace attributes.
  • Improve description.
  • TESTING: Add Docker and EC2 documentation.
• Testing:
  • Use SoloRunner to run unit tests faster.
  • Move ChefSpec tests to test/unit.
  • Add .kitchen.docker.yml file.
  • Travis CI: Run against Ruby 2.2.
  • Gemfile: kichen-docker ~> 2.1.
  • Rakfile: Add clean task.