[#17] Reviewed LessThanTest
[#17] Reviewed LessThanTest

- Renamed new test method to indicate behavior tested.
- Added additional assertion to new test.
- CS fixes per phpcs.

ezimuel/zend-validator,zendframework/zend-validator,svycka/zend-validator,zf2timo/zend-validator,akrabat/zend-validator