Allow override of cmd to enable forcing _express-checkout-mobile
Allow override of cmd to enable forcing _express-checkout-mobile

saberma/paypal-express,nov/paypal-express,ianfleeton/paypal-express,Storenvy/paypal-express,piktochart/paypal-express,leandro/paypal-express,fny/paypal-express,ratafire/paypal-express