added test folder
added test folder

lingqingmeng/preorder,quintendf/node_stripe,mjhea0/node-stripe-charge,jpca999/node-stripe-charge,lingqingmeng/preorder,kolbeypruitt/mtm_official,mjhea0/node-stripe-charge,jpca999/node-stripe-charge,kolbeypruitt/mtm_official,yalcindo/stripeFromMike,yalcindo/stripeFromMike,amberwoodrow/node-stripe-charge,SarahNoel/node-stripe-charge,amberwoodrow/node-stripe-charge,quintendf/node_stripe,SarahNoel/node-stripe-charge