Pass params to get notifications API (#237)

Author: akshay-birajdar

examples/notifications.rb

@@ -13,3 +13,6 @@
 
 # mute a topic
 client.topic_set_user_notification_level(1, notification_level: 0)
+
+# get user notifications
+client.notifications(username: 'discourse')

lib/discourse_api/api/notifications.rb

@@ -2,8 +2,11 @@
 module DiscourseApi
   module API
     module Notifications
-      def notifications
-        response = get('/notifications.json')
+      def notifications(params = {})
+        params = API.params(params)
+          .optional(:username, :recent, :limit, :offset, :filter)
+
+        response = get('/notifications.json', params)
         response[:body]
       end
     end