Update announcements.json

announcements.json

 [
+	{"id":14,"title":"周赛接受预约报名及周秋周赛继续","url":"http://www.duelcn.com/forum.php?mod=viewthread&tid=59897&page=1&extra=#pid251859","created_at":"2013-09-18T13:34:07+08:00","updated_at":"2013-09-18T07:12:08+08:00"},
 	{"id":13,"title":"游戏王竞赛联盟~周赛","url":"http://www.duelcn.com/thread-59882-1-1.html","created_at":"2013-08-03T13:34:07+08:00","updated_at":"2013-08-03T07:12:08+08:00"},
 	{"id":10,"title":"和我签下契约，成为魔法少女吧 (Mycard团队成员招募) <-戳我","url":"https://my-card.in/humans", "created_at":"2013-04-13T18:12:07+08:00","updated_at":"2013-08-24T13:55:08+08:00"},
 	{"id":17,"title":"狮子男巫再次来袭！！","url":"http://forum.my-card.in/t/topic/153","created_at":"2013-08-20T13:34:07+08:00","updated_at":"2013-08-20T07:12:08+08:00"},