Merge branch 'modifyAnEvent' into dev

storage/storage.go

@@ -12,6 +12,7 @@ type Storage interface {
 	GetEvents(namespaces []string) ([]Event, error)
 	AddSubscription(eventid string, subscription Subscription) error
 	UpdateSubscription(eventid string, subscriber string, deletesubscription Subscription) error
+	UpdateEvent(Event) error
 }
 type StorageImpl struct {
 }