Add route for DELETE method and keeper edit path

This is a workaround needed to make the test for removing keepers (in league_manager_spec)
pass. There's currently a bug in PhantomJS (ariya/phantomjs#11214)
that causes PhantomJS to make a request for 303 redirect with the original request method,
in this case DELETE instead of a GET.

config/routes.rb

@@ -6,6 +6,9 @@
  resource :draft, only: :show
  resource :draft_results, only: [:create, :show]
  resource :keepers, only: [:create, :destroy, :edit]
+ # workaround for PhantomJS bug https://github.com/ariya/phantomjs/issues/11214
+ # league_manager_spec/can manage keepers after picks are generated will fail without this route
+ delete '/keepers/edit', to: 'keepers#edit'
  resources :teams
  get 'draft_order',
  to: 'draft_order#edit'