Fix running command and checking for success
WIP: Refactor
WIP: Rewrite test_unit_200_rails_4
WIP: Fix rspec_2_rails_4 test
WIP: test_unit_2_rails_4
WIP: minitest_4_rails_4
TU shim adapter falls back to MT if TU unavailable

Colloquially people often say Test::Unit when they really mean Minitest.
Therefore it is entirely possible that people who still wish to include RR into
their test framework manually will use TestUnit when they really mean MiniTest.
WIP: Add tests for ActiveSupport::TestCase / Rails 4
WIP: Don't print test helper content outside of debug mode
WIP: Don't generate test framework when generating a Cucumber project
Guard an adapter from being double-loaded
Including a shim adapter now just re-runs the autohook

The autohook already injects an adapter into the appropriate test framework
which is available when the autohook runs. There is no need to create shim
adapter modules because they could easily conflict with real adapter modules.
WIP: rewrite rails 3 tests