Do not use :Win32 outside of let, describe, it blocks since we don't have it ready yet.
Merge pull request #1814 from opscode/sersut/travis-fix

Do not use :Win32 outside of let, describe, it blocks since we don't have it ready yet.
Add information on using Test Kitchen for E2E testing.
Create and test cookbook on Ubuntu 12.04
Remove kitchen tests from spec/ directory, so tests can be run separately.
Add test instructions and contributing information.
Update for Ubuntu end-to-end tests.