VoronoyAlexandr

 def email_notification

    <<-TEXT
    Hello, #{email_notification_params[:reader_name]}

You should return a book #{email_notification_params[:book_title]} authored by "#{email_notification_params[:book_author]}" in  #{email_notification_params[:time_left]} hours.

Otherwise you will be charged $#{email_notification_params[:penalty_per_hour]} per hour.
    TEXT