Don't display method name or example values

This keeps the display name short in favour of using formatting placeholders like {0} in the step names.
Appease StyleCop and make a few minor tweaks
re #37
changed public CurrentScenario.ShowExample to protected Command.ShowExampleValues
removed CurrentScenario.ShowMethod and associated code - method needs to be shown until more fundamental changes are made to the output (e.g. grouping steps by scenario)
improved ExampleFeature.GenericScenario skip reason
Merge pull request #38 from adamralph/remove-example-values-from-test-output

#37 Remove example values from test output