Added mocks for more types of materials
Fixed Error in Mock file
Restructured tests to include coverage for more types of bib records
Moved getAwards and get Reviews from Book to Creative Work class
Fixed getCreativeWorks in OfferSet class to get properly typemapped
objects
Added tests and mocks for if Offer is for Bib which is not typemapped
Merge branch 'master' of https://github.com/OCLC-Developer-Network/worldcat-discovery-php