added ajax controller

app/controllers/ajax_controller.rb

@@ -0,0 +1,4 @@
+class AjaxController < ApplicationController
+  def ask
+  end
+end

app/helpers/ajax_helper.rb

@@ -0,0 +1,2 @@
+module AjaxHelper
+end

app/views/ajax/ask.json.jbuilder

@@ -0,0 +1,3 @@
+json.success @success
+json.status @status
+json.message @message

test/controllers/ajax_controller_test.rb

@@ -0,0 +1,9 @@
+require 'test_helper'
+
+class AjaxControllerTest < ActionController::TestCase
+  test "should get ask" do
+    get :ask
+    assert_response :success
+  end
+
+end

test/helpers/ajax_helper_test.rb

@@ -0,0 +1,4 @@
+require 'test_helper'
+
+class AjaxHelperTest < ActionView::TestCase
+end