Notification::getTimestamp()

src/notification.coffee

@@ -3,6 +3,7 @@
 module.exports =
 class Notification
   constructor: (@type, @message, @options={}) ->
+    @timestamp = new Date()
 
   getOptions: -> @options
 
@@ -10,6 +11,8 @@ class Notification
 
   getMessage: -> @message
 
+  getTimestamp: -> @timestamp
+
   getDetail: -> @optons.detail
 
   isClosable: ->