fix issue#19 : Make JdbcRecordMapper more intelligent : if field names are the same as result set column names, do not specify them, they will be retrieved form the result set meta data (convention over configuration)
update version number to 2.1.1
update documentation about jdbc record mapping convention over configuration
remove duplicate exception message
remove useless default constructor
fix issue#20 : Easy Batch Object Mapper does not handle inherited fields
improve Object Mapper implementation : use java.beans.Introspector and java.beans.BeanInfo classes to introspect the target type