ExceptionExercisesTest

[Ttcao]

For the createPerson function the assertions need to be fixed for the tests:

• "should return Person if supplied a valid name and age"
  The test should assert Person("Fred", 32)

• "should throw an EmptyNameException if the name supplied is empty"
  The test should assert "provided name is empty"

• "should throw an InvalidAgeValueException if the age supplied is not an Int"
  The test should assert InvalidAgeValueException is thrown instead of InvalidAgeRangeException

[sanjivsahayamrea]

nice work @Ttcao. Looking forward to your PR. :)

[wjlow]

Closed in #39