Required files
rspec/matchers/extensions/instance_eval_with_args
rspec/matchers/pretty
rspec/matchers/built_in
rspec/matchers/matcher
rspec/matchers/operator_matcher
rspec/matchers/be_close
rspec/matchers/generated_descriptions
rspec/matchers/method_missing
rspec/matchers/compatibility
rspec/matchers/dsl
rspec/matchers/test_unit_integration