destroy model post and create model book
Merge branch 'authentication'
change migration
add possibility add new books
add possibility update and destroy books
add css
add user selection of books
change book_params and add validates
add assotiations and new filter
change date input
Replace tabs with spaces
chagne before_action
change validate
Merge pull request #4 from KudryashovAV/task3

Добавлена возможность добавлать прочитанные книги