supported book configuration in config.rb.
supported book configuration in config.rb.

orangain/review,murashitas/review,murashitas/review,kmuto/review,kuad9/review_study,suzuki/review,krororo/review,krororo/review,kuad9/review_study,kmuto/review,kmuto/review,krororo/review,takahashim/review,orangain/review,takahashim/review,masawada/review,suzuki/review,masawada/review