Added support for stripe

state/model.go

@@ -0,0 +1,18 @@
+package state
+
+type PaymentState string
+
+const (
+	// initial state
+	StateInitialized PaymentState = "initialized"
+
+	// state on response
+	StateAccepted               PaymentState = "accepted"
+	StateError                  PaymentState = "error"
+	StateCanceledInitialization PaymentState = "canceled_initialization"
+
+	// state after confirmation
+	StateCompleted PaymentState = "completed"
+	StateVoided    PaymentState = "voided"
+	StateCanceled  PaymentState = "canceled"
+)