Add eh for documentation lookup

mix.exs

@@ -42,6 +42,7 @@ defmodule Isn.Mixfile do
   defp deps do
     [{:postgrex, "~> 0.8.1"},
      {:ecto, "~> 0.11.0"},
+     {:eh, "~> 0.2.0"},
      {:ex_doc, "~> 0.6.1", only: :dev}]
   end
 end

mix.lock

@@ -1,5 +1,6 @@
 %{"decimal": {:hex, :decimal, "1.1.0"},
   "ecto": {:hex, :ecto, "0.11.0"},
+  "eh": {:hex, :eh, "0.2.0"},
   "ex_doc": {:hex, :ex_doc, "0.6.2"},
   "poolboy": {:hex, :poolboy, "1.5.1"},
   "postgrex": {:hex, :postgrex, "0.8.1"}}