Usage:
gr Some_booK_name
gr x Some_book_name
gr yy "Some book name"
gr yy "Some authors name"
gr yy Some_authors_name
gr to x/x__x Some_booK_name
where x is:
b for The_books_name (underscore-separated)
r for book's rating
a for book's author
i for book's id
and yy is:
de for description of the book
rt for the books rating distribution
at for author's top books
ab for all an author's books
aa for about the author
ai for info about the author
NOTE: if 'to' is used, the directory matching the book's name will be renamed