bot.rb in telegram-bot-ruby-0.3.0

- old
+ new

@@ -3,7 +3,8 @@
 require 'virtus'
 
 require 'telegram/bot/types'
 require 'telegram/bot/exceptions'
 require 'telegram/bot/api'
+require 'telegram/bot/null_logger'
 require 'telegram/bot/client'
 require 'telegram/bot/version'