Added paypal callbacks

pages/paypal/cancel.go

@@ -0,0 +1,15 @@
+package paypal
+
+import (
+	"fmt"
+
+	"github.com/aerogo/aero"
+)
+
+// Cancel ...
+func Cancel(ctx *aero.Context) string {
+	token := ctx.Query("token")
+	fmt.Println("cancel", token)
+
+	return ctx.HTML("cancel")
+}