Add annotate gem and associated rake task. Annotate models.

app/models/user_token.rb

@@ -1,3 +1,23 @@
+# == Schema Information
+#
+# Table name: user_tokens
+#
+#  id      :integer          not null, primary key
+#  user_id :integer          not null
+#  token   :string           not null
+#  expiry  :datetime         not null
+#  referer :text
+#
+# Indexes
+#
+#  user_tokens_token_idx    (token) UNIQUE
+#  user_tokens_user_id_idx  (user_id)
+#
+# Foreign Keys
+#
+#  user_tokens_user_id_fkey  (user_id => users.id)
+#
+
 class UserToken < ActiveRecord::Base
   belongs_to :user