Incremented version for next changes to come...
change nullify -> convertNullOrJson
1. changing test for checking integer in list
2. MyBoltList -> MyBoltListItem
3. move mapper  out of for loops
adding validation test for output with list
testWithListNotValid -> testWithListNullViolation
Merge pull request #11 from forter/lirong-contracted-test-json-support

change nullify -> convertNullOrJson
update version from 0.2.4 to 0.2.5