update readme
add migration for cards
 add view and index route
add card images
able to view a card in the dom; remember --> no need for /public, it is automatic
remove unnecessary card images and change ace card filename from 1 to a
add validations to Card
seed file is up; properly seed a whole deck with name, value, image
add hard! method to Card
Merge pull request #1 from paopay/cards_setup

Cards setup