Support data extraction from http://www.goodreads.com/

- Add link and data extraction future in extract_data.clj file
- Add process-data function to main
- Add hickory and org.clojure/data.json dependencies to project.clj file
Enable inserting books in database and add books and book pages

- Add books.clj and book.clj files
- Add database functions for book object to mongo.clj
- Enable inserting books with review data in database
- Add images for presenting rating values and edit style.css file
Enable rating a book and a adding comment

- Use clj-time "0.5.1" library
- Extracted publish dates are converted from string to date format
- Sort reviews by date attribute
- Enable rating and commenting on book
Add search book feature

- Add search book by title, author or ISBN option
Refactor code
Add page pagination

- Add page pagination when listing books. List maximum 10 books on one
page.
Change release version to 2.0.0