Improved Annotation Driven Mapper
 - One, simplified annotation mapping @Map
 - Allowed nested mappings (see StudentWithMappableGrade class)
 - Refactored Reflections class
Refactoring ADMapper
Extended ADMapper functionality with TypeConverter.
 See test with StudentWithGradeAsInteger mapped to StudentWithGradeAsString in AnnotationDrivenMapperTest class.
Merge pull request #47 from jsolve/mapper-improvements

Mapper improvements