Cire API

POST /api/merchants                            create/update merchant
GET  /api/merchants/:slug                       get merchant config
GET  /api/merchants/:slug/passes               list merchant's customers
POST /api/merchants/:slug/passes               create customer pass
GET  /api/passes/:serial/download              download .pkpass
POST /api/passes/:serial/stamp                 +1 stamp + push notif
POST /api/passes/:serial/message               push custom message