lib/chatterbot/config.rb
def bot_config
      {
        :consumer_key => ENV["chatterbot_consumer_key"],
        :consumer_secret => ENV["chatterbot_consumer_secret"],
        :access_token => ENV["chatterbot_access_token"],
        :access_token_secret => ENV["chatterbot_access_secret"] || ENV["chatterbot_access_token_secret"]
      }.delete_if { |k, v| v.nil? }.merge(slurp_file(config_file) || {})
    end
def bot_config
      {
        :consumer_key => ENV["chatterbot_consumer_key"],
        :consumer_secret => ENV["chatterbot_consumer_secret"],
        :access_token => ENV["chatterbot_access_token"],
        :access_token_secret => ENV["chatterbot_access_secret"] || ENV["chatterbot_access_token_secret"]
      }.delete_if { |k, v| v.nil? }.merge(slurp_file(config_file) || {})
    end
bot-specific config settings