basic iOS 7/Xcode 5 fixes & settings
first cut of tracking button iOS 7 fixes
first cut of iOS 7 heading compass
minor spacing fixes
basic iOS 7 tint response for user location tracking (dot/halo/accuracy)
use gray indicator on iOS 7
update to modern use of `instancetype`
proper use of `NSTextAlignmentCenter`
integrating CocoaPods fix from @ccarse
better iOS 7 determination
Merge branch 'develop' into ios7
updated README for dev todos
todo list adds
user location updates for latest iOS 7 beta look
fixes #270: correct XIB setup with autolayout
Merge branch '270-autolayout-storyboards' into ios7
only attempt tint refresh when on map
fix autolayout for compass view
update compass constraints in the right place
todo updates