Annotate models

app/models/facebook_user_info.rb

@@ -16,8 +16,8 @@ end
 #  gender           :string(255)
 #  name             :string(255)
 #  link             :string(255)
-#  created_at       :datetime         not null
-#  updated_at       :datetime         not null
+#  created_at       :datetime
+#  updated_at       :datetime
 #
 # Indexes
 #