#25 refactor: aligned AsyncStepFeature scenario style, refactored some scenarios and removed redundant code
#25 refactor: changed AsyncStringExtensions to StringExtensions.Async.cs
#25 refactor: extracted repeated code in CurrentScenario.EmbellishStepName()
Merge pull request #129 from adamralph/25-minor-refactorings

#25 minor refactorings