Merge pull request #4 from alistairhill/see_single_flashcard

See single flashcard
We can select a deck now. UST ready
Merge pull request #5 from alistairhill/select_deck

We can select a deck now. UST ready
Merge pull request #6 from alistairhill/see_single_flashcard

added games table, added rspec test
select dec refactoring
Merge pull request #7 from alistairhill/select_deck

select dec refactoring
added response for score correct/incorrect