user mailers

completes #25

test/controllers/admin/auth_controller_test.rb

@@ -44,8 +44,9 @@ module Admin
 
     test "should process a reset request" do
       user = users(:admin)
-      post admin_send_reset_url, params: { auth: { email: user.email } }
-
+      assert_difference("ActionMailer::Base.deliveries.size", 1) do
+        post admin_send_reset_url, params: { auth: { email: user.email } }
+      end
       refute_equal user.reset_token, User.find(user.id).reset_token
       assert_redirected_to admin_reset_request_url
       assert_match(/request.*sent/i, flash[:success])