Silencing compile warning with cast.
Git Ignore update
Merge pull request #53 from pivotal-metromile/master

Silencing compile warning with cast.
Merge branch 'master' into ios_7_style
Reboot sample app in prep for building new iOS 7 style.
SMCalloutView -> SMClassicCalloutView

This changeset is for Git, so it can track the fact that this file was renamed and modified.
Great progress towards iOS 7 - basically identical so far (thanks to Reveal.app)
Looks pretty much identical.
Match new iOS 7-style bounce animation.
Refactoring; simplification
Allow setting iOS-7 style edge constraints
Proper scrolling into view for MKMapView
Scrollview example with proper inset treatment
Support upward arrow in iOS 7 style
Proper accessory masking on iOS 7
Masking fix; don't mask background view
Sample accessory view; fixes for interaction
Allow "clicking" the callout view itself like iOS 7
Demonstrate how to tap the accessory
Remove reveal library loading