Using selenium-webdriver instead of capybara-webkit due to problem with nested URL params
Setup rspec to use Capybara, FactoryGirl, DatabaseCleaner and rspec-instafail
Defined :items factory in spec/factories.rb
Built rspec feature test for loading and validating a datatable using various sets of parameters
Simpified load_datatable_in_various_ways_spec.rb
Limited test to validating that the html/js returned by the server can be used to create jQuery datatable
Separated Datatable_helpers module into spec/datatable_helpers.rb
Moved :js param to top-level describe. Changed static int 50 to #{num_items} in assertion