password reset requests

db/migrate/20160824183159_add_resets_to_users.rb

@@ -0,0 +1,8 @@
+class AddResetsToUsers < ActiveRecord::Migration[5.0]
+  def change
+    add_column :users, :reset_token, :string
+    add_column :users, :reset_timestamp, :datetime
+
+    add_index :users, :reset_token
+  end
+end