Add structure.sql

Author: joshsmith

mix.exs

@@ -118,6 +118,8 @@ defmodule CodeCorps.Mixfile do
   defp aliases do
     ["ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
      "ecto.reset": ["ecto.drop", "ecto.setup"],
+     "ecto.migrate": ["ecto.migrate", "ecto.dump"],
+     "ecto.rollback": ["ecto.rollback", "ecto.dump"],
      "test": ["ecto.create --quiet", "ecto.migrate", "test"]]
   end
 end