Merge pull request #1 from aturhani/master

changed contributors.json
Merge pull request #2 from aturhani/master

added users table
Merge pull request #3 from aturhani/master

added books table
Merge pull request #5 from aturhani/master

added library_books table
Seeded library_books table
created User-LibraryBooks one-to-many relationship
created LibraryBooks-Book one-to-one relationship
added search routes