gemspec updated for Spree 1.0.0
gemspec updated for Spree 1.0.0

beni55/spree_paypal_express,daflip/spree_paypal_express,Promptus/spree_paypal_express,beni55/spree_paypal_express,beni55/spree_paypal_express,littlebitselectronics/spree_paypal_express,spree-contrib/spree_paypal_express,xinghao/spree_paypal_express,xinghao/spree-paypal-express,godot/mc-spree-paypal-express,sbounmy/spree_paypal_express,daflip/spree_paypal_express,23tux/spree_paypal_express,Promptus/spree_paypal_express,littlebitselectronics/spree_paypal_express,godot/mc-spree-paypal-express,23tux/spree_paypal_express,spree-contrib/spree_paypal_express