Created Book class. Added insert functions for Book, BookCopy, HasAuthor, and HasSubject.
Added ps.executeUpdate statements to all insert functions in Book
Merge branch 'master' of https://github.com/g2-aj/cs304 into g3-ks-branch
Created book class. Created insert and delete functions for Book, BookCopy, HasAuthor, HasSubject
Merge pull request #3 from g2-aj/g3-ks-branch

G3 ks branch