Feature/nyupress data loader

I am adding data loader for OpenAccees Books NYUPress hosts at : openaccessbooks.nyupress.org
The data loader uses standard Ichabod data import schema (open_access_books resource set is created, it calls data reader for the collection) . 
Files added:
app/resource_sets/nyu_press_open_access_book.rb
spec/resource_sets/nyu_press_open_access_book_spec.rb
lib/ichabod/resource_set/source_readers/nyu_press_open_access_book_reader.rb
spec/ichabod/resource_set/source_readers/nyu_press_open_access_book_reader_spec.rb 
spec/vcr_cassettes/resource_sets/nyu_press_books.yml
Files modified:
config/deploy.rb
features/collection_facet.feature
features/search.feature
features/support/env.rb
spec/spec_helper.rb
app/model/nyucore/collection.rb
spec/models/nyucore/collection_spec.rb