add weekly maintenance script

db/migrate/20130331180246_create_key_values.rb

@@ -0,0 +1,11 @@
+class CreateKeyValues < ActiveRecord::Migration
+  def change
+    create_table :key_values do |t|
+      t.string :key, :null => false
+      t.text :value
+      t.timestamps
+    end
+    
+    add_index :key_values, :key, :unique => true
+  end
+end