fix weird bug with HibernateGormEnhancer, cleanup

did this in GormEnhancingBeanPostProcessor.  for whatever weird
reason, HibernateGormEnhancer.initialiseFinders could not be
called when booting up gorm.  This is a total hack, but it works
Merge pull request #9 from metridoc/weird-error-and-cleanup

fix weird bug with HibernateGormEnhancer, cleanup