added database schema url in Readme
model and migration for Round added
Merge pull request #1 from rantoniops/alan

Added wireframe diagram
User migration and model
Fix user migration
Create models and migrations for decks and cards.
Merge pull request #2 from rantoniops/christian

User migration and model
Fix class Card to belong to Deck.
Merge pull request #3 from rantoniops/cassie

Create models and migrations for decks and cards.
added world capitals csv