added form to create card in view and wrote createCard method
wrote cards#create
fixed missing 'end' in cardscontroller
added bootstrap navbar
list of cards showing in view
added some grid styling
fixed some styling issues
worked on navbar links
created route and view for quiz page
fixed navlinks and routing issue with quiz
getNewCard() to generate random card in quiz page
checkAnswer() to check if answer is correct; displaying number of tries remaining
timer shows to nearest tenth