fixed the order of RSS items and posts on the archive page

source/archives.haml

@@ -4,7 +4,7 @@ title: Blog Archives
 ---
 %h2 Blog Archives
 
-- posts = site.posts.group_by { |p| p.date.strftime("%Y") }
+- posts = site.posts.reverse.group_by { |p| p.date.strftime("%Y") }
 - posts.keys.each do |year|
   %h3= year
   %ul

source/atom.haml

@@ -15,7 +15,7 @@ full_url: http://yoursite.com
   %author
     %name= page.author
     %email= page.email
-  - site.posts[0..14].each do |post|
+  - site.posts.reverse[0..14].each do |post|
     %entry
       %title= rp(post.title)
       %link(href="#{page.full_url}#{post.url}")