Added FluentScanner overload to StepActionFactory

Author: Jake Ginnivan

TestStack.BDDfy/Scanners/StepScanners/Fluent/FluentScanner.cs

@@ -127,7 +127,7 @@ private void AddStep(Expression<Action<TScenario>> stepAction, string stepTextTe
 
             stepTitle = stepTitle.Trim();
             var action = stepAction.Compile();
-            _steps.Add(new ExecutionStep(o => action((TScenario)o), stepTitle, asserts, executionOrder, reports));
+            _steps.Add(new ExecutionStep(StepActionFactory.GetStepAction(action), stepTitle, asserts, executionOrder, reports));
         }
 
         public IGiven<TScenario> Given(Expression<Action<TScenario>> givenStep, string stepTextTemplate = null)

TestStack.BDDfy/Scanners/StepScanners/StepActionFactory.cs

@@ -9,5 +9,11 @@ public static Action<object> GetStepAction(MethodInfo method, object[] inputs)
         {
             return o => method.Invoke(o, inputs);
         }
+
+        public static Action<object> GetStepAction<TScenario>(Action<TScenario> action)
+            where TScenario : class
+        {
+            return o => action((TScenario) o);
+        }
     }
 }