set up redis and heroku config

config/cable.yml

@@ -6,5 +6,5 @@ test:
 
 production:
   adapter: redis
-  url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
+  url: ${REDISTOGO_URL}
   channel_prefix: polyglot_production

config/environments/production.rb

@@ -46,8 +46,8 @@ Rails.application.configure do
 
   # Mount Action Cable outside main process or domain
   # config.action_cable.mount_path = nil
-  # config.action_cable.url = 'wss://example.com/cable'
-  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http:\/\/example.*/ ]
+  config.action_cable.url = 'wss://polyglot-173.herokuapp.com/cable'
+  config.action_cable.allowed_request_origins = [ '*' ]
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   # config.force_ssl = true