added auto generated copyright to footer as well as credit for Jekyll and Octopress

source/_layouts/default.haml

@@ -33,4 +33,6 @@ root_url:
         - else
           = content
     #footer
-      .page_width Footer
+      .page_width
+        = "Copyright © #{Time.now.strftime('%Y')} - #{page.blog_title} | "
+        %span.credit Powered by <a href="http://github.com/henrik/jekyll">Jekyll</a> & <a href="http://github.com/imathis/octopress/">Octopress</a>

source/stylesheets/partials/main/_layout.sass

@@ -36,6 +36,8 @@ html body
   background-color= !page_bg
   border-top= "1px solid" !page_border
   padding: 25px 0
+  .page_width
+    background-color= !page_bg
 
 #subnav
   +clearfix