Merge pull request #16 from HaChan/taskShowBook

refs #TaskShowBookUser
Add a new book
Merge pull request #15 from ducnhat1989/AddNewBook

Add a new book
Update a book
Merge pull request #17 from ducnhat1989/Edit_Book

Update a book
Delete a book
Merge pull request #18 from ducnhat1989/DeleteBook

Delete a book
follow/unfollow
follow//unfollow
follow//unfollow
Merge pull request #19 from gmini196/follow

Follow
refs #TaskSearchBook