change spree version to 1.1.1 and spree_core version to 2.1.0
change spree version to 1.1.1 and spree_core version to 2.1.0

sunny2601/spree-point-of-sale,vinsol/spree-point-of-sale,sunny2601/spree-point-of-sale,sunny2601/spree-point-of-sale,vinsol/spree-point-of-sale