Update README.md regarding Go supported versions.
Update README.md regarding Go supported versions.

go-gorp/gorp,evenco/gorp,cortex/gorp,gabelula/gorp,go-gorp/gorp,gabelula/gorp,kevinc0825/gorm,kimxilxyong/gorp,yp-engineering/gorp,evenco/gorp,mousesun/gorp,GeertJohan/gorp,cortex/gorp,mousesun/gorp,kevinc0825/gorm,kimxilxyong/gorp,losinggeneration/gorp,yp-engineering/gorp,losinggeneration/gorp,GeertJohan/gorp