update with changes from Production branch

db/migrate/20120821145951_add_ranking_to_channel.rb

@@ -0,0 +1,9 @@
+class AddRankingToChannel < ActiveRecord::Migration
+  def self.up
+    add_column :channels, :ranking, :integer
+  end
+
+  def self.down
+    remove_column :channels, :ranking
+  end
+end