Fixed issues with poller in production. Fixes #3

lib/tasks/telegram-bot.rake

@@ -1,9 +1,14 @@
 namespace :telegram do
   namespace :bot do
-    desc 'Run poller'
-    task poller: :environment do
-      console = ActiveSupport::Logger.new(STDERR)
-      Rails.logger.extend ActiveSupport::Logger.broadcast console
+    desc 'Run poller. It broadcasts Rails.logger to STDOUT in dev like `rails s` do. ' \
+      'Use LOG_TO_STDOUT to enable/disable broadcasting.'
+    task :poller do
+      ENV['BOT_POLLER_MODE'] = 'true'
+      Rake::Task['environment'].invoke
+      if ENV.fetch('LOG_TO_STDOUT') { Rails.env.development? }.present?
+        console = ActiveSupport::Logger.new(STDERR)
+        Rails.logger.extend ActiveSupport::Logger.broadcast console
+      end
       Telegram::Bot::UpdatesPoller.start(ENV['BOT'].try!(:to_sym) || :default)
     end