Make the interaction of PKView more intuitive#9

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DanielKao wants to merge 2 commits intolmcd:masterfrom DanielKao:card_last_four_number

+31

Commits on Aug 22, 2014

Animate back to _cardNumberField when select the _cardLastFourField
DanielKao
committed
Added shake effect when card number is invalid
DanielKao
committed