Push review finding
Added Apache 2 License
Exceptions for Control Flow sample
Merge branch 'master' into sampleSolution

Conflicts:
	source/bbv.CleanCodeWorkshop.Test/HiddenPolymorphism/EmployeeTest.cs
	source/bbv.CleanCodeWorkshop.Test/IfBattle/DiscountCalculatorTest.cs
	source/bbv.CleanCodeWorkshop.Test/PersistingEnums/PersistenceTest.cs
	source/bbv.CleanCodeWorkshop.Test/UnexpectedSideEffect/CustomerFinderTest.cs
	source/bbv.CleanCodeWorkshop.Test/UseNullObjects/NewsletterServiceTest.cs
	source/bbv.CleanCodeWorkshop.Test/bbv.CleanCodeWorkshop.Test.csproj
	source/bbv.CleanCodeWorkshop/HiddenPolymorphism/Employee.cs
	source/bbv.CleanCodeWorkshop/HiddenPolymorphism/EmployeeType.cs
	source/bbv.CleanCodeWorkshop/PersistingEnums/Title.cs
	source/bbv.CleanCodeWorkshop/UseNullObjects/DummyCustomerFinder.cs
	source/bbv.CleanCodeWorkshop/bbv.CleanCodeWorkshop.csproj
Solution for Exceptions for Control Flow exercise
Corrected license headers
Merge branch 'master' into sampleSolution

Conflicts:
	source/bbv.CleanCodeWorkshop.Test/HiddenPolymorphism/EmployeeTest.cs
	source/bbv.CleanCodeWorkshop/ExceptionsForControlFlow/IUserAuthenticator.cs
	source/bbv.CleanCodeWorkshop/ExceptionsForControlFlow/UserAuthenticator.cs
	source/bbv.CleanCodeWorkshop/HiddenPolymorphism/Employee.cs
	source/bbv.CleanCodeWorkshop/HiddenPolymorphism/IEmployee.cs
	source/bbv.CleanCodeWorkshop/PersistingEnums/Titles.cs
	source/bbv.CleanCodeWorkshop/Singletons/IDateProvider.cs
	source/bbv.CleanCodeWorkshop/Singletons/IPrinter.cs
	source/bbv.CleanCodeWorkshop/UseNullObjects/NullCustomer.cs