Create train! method for complex predictor to take in total words, total books, and top words for each book.
Update predict method to only compare top words from predictor book. Accuracy of 0.65.
Update helper method good_token_count to reduce repeated code.
Update predict method to search title words for category and return that category if they include the category. Accuracy of 0.76.
Added title words to top_words array for each category. Accuracy of 0.84.
Remove good_token? method from helper method. Improve accuracy to 0.88.
Best solution.