Searchkick dummy app

Created to show existing bug with searchkich index

1. clone
2. bundle install
3. make sure mongoid is running
4. make sure elastic search is runnig
5. run tests bundle exec rspec (All tests should pass, right now two fail)

It should fail outside test env too. Not sure why it pass now. I will try to find a reason (changes between those dummy app and more complex one) and update those code.