Update help text for 'troo refresh'.
Update VCR to v2.9.0.
Add options to test.
Whitespace changes.
Update gems;

- Does not update Ohm or Thor.
Downgrade curses and ohm-contrib.
Run all tests after fixing a problem.
Update contributing section.
Merge pull request #32 from gavinlaking/feature/twerks

Feature/twerks