#ivCard componenet
has two views, front and back. The card itself adds a button to flip between these views and manages this stae internally.
###Events changes in view are emited up the scope chain and can be broadcast from the parent scopes to control the view state.
###Useage
<div iv-card>
<div front>
Some Text on the front of the card
</div>
<div back>
Different text for the back
</div>
</div>
responding to events
<div iv-card on-flip="doThingOnFlip" on-open="doThingOnOpen" on-close="doThingOnClose">
<div front>
Some Text on the front of the card
</div>
<div back>
Different text for the back
</div>
</div>