Compatibility with Octopress site.

Don't break urls.
 1. New Route function which generates routes compatible with old blog.
 2. Renamed posts folder to blog.

blog/2011-03-21-long-time.markdown

@@ -0,0 +1,14 @@
+---
+author: dhananjayishere
+comments: true
+date: 2011-03-21 01:23:00
+layout: post
+slug: long-time
+title: Long time.
+wordpress_id: 47145570
+categories: Update Posterous
+---
+
+Its been long time, Almost a year. Lots of things happened. Good and bad, I dont want to recollect and dump all the past here, But future, I promise you to speak about it, :-)
+
+Im moving to posterous from my old blog (obviously).