Required files
active_record
acts_as_indexed/class_methods
acts_as_indexed/instance_methods
acts_as_indexed/singleton_methods
acts_as_indexed/configuration
acts_as_indexed/search_index
acts_as_indexed/search_atom
acts_as_indexed/storage
acts_as_indexed/pre_tokenizer
acts_as_indexed/tokenizer
acts_as_indexed/token_normalizer
will_paginate_search