Updated code library and tests with changes to modelling in WorldCat
Discovery API from 10/2014
Moved getIsPartOf to CreativeWork object to be used more globally
Created a Series object and tests
Added tests for ProductModel object
Commented out test for getAudience
Added tests for getContentRating, getNumberOfPages, getIsPartOf
Removed debugging line for printing namespaces
Added mock for bibWithAudience
Added new and tests mocks for bibWithAudience and
bibWithOnlyContributors
Fixed Book class to properly document what is returned via getBookFormat
method
Fixed bibOnlyContributors mock