1. Added condition to full_url filter to allow it to be used as a root_url appending filter for remapping root "/" urls when octopress is deployed to a subdirectory. Updated _includes/article and _layouts/page to use the filter

2. Added documentation for the include_code plugin

plugins/custom_filters.rb

@@ -21,6 +21,7 @@ module OctopressFilters
 
   # Replaces relative urls with full urls
   def full_urls(input, url='')
+    url ||= ''
     input.gsub /(\s+(href|src)\s*=\s*["|']{1})(\/[^\"'>]+)/ do
       $1+url+$3
     end