write test file and change image file
Merge branch 'master' of https://github.com/Juncai/cs5200dbultimate
add links and change image
modify booksearch page
publisher dao and author dao
Merge branch 'master' of https://github.com/Juncai/cs5200dbultimate into develop_cj_2
Merge branch 'develop' of https://github.com/Juncai/cs5200dbultimate into develop_cj_3
final1