Add docs about GorpLogger interface
Add docs about GorpLogger interface

coopernurse/gorp,rickb777/gorp-old2,coopernurse/gorp,xiaoenai/gorp,go-gorp/gorp,yp-engineering/gorp,d-g-laptev/gorp,evenco/gorp,mousesun/gorp,kevinc0825/gorm,gabelula/gorp,kevinc0825/gorm,cortex/gorp,kimxilxyong/gorp,outdoorsy/gorp,evenco/gorp,GeertJohan/gorp,cortex/gorp,d-g-laptev/gorp,outdoorsy/gorp,yp-engineering/gorp,losinggeneration/gorp,go-gorp/gorp,GeertJohan/gorp,mousesun/gorp,kimxilxyong/gorp,losinggeneration/gorp,xiaoenai/gorp,gabelula/gorp,rickb777/gorp-old2