Use updated if published is not present

bin/jekyll-planet.rb

@@ -20,7 +20,13 @@ def run( args )
 
   Pluto.connect( @db_config )
 
-  Pluto::Model::Item.latest.where.not(title: '', published: nil).limit(1000).each_with_index do |item,i|
+  Pluto::Model::Item.latest.where.not(title: '').limit(1000).each_with_index do |item,i|
+    if item.published == nil and item.updated == nil
+      next
+    end
+    if item.published == nil and item.updated != nil
+      item.published = item.updated
+    end
     puts "[#{i+1}] #{item.title}"
 
     generate_blog_post( item )