Merge pull request #16 from dblock/refactored-map-kit

Decoupled map view with and without annotations, added tests.
Be iOS 6 only.
Merge pull request #17 from dblock/refactored-map-kit

Followup to @orta and @robb's code review.
Be iOS 6 only.
Use released EXPMatchers+FBSnapshotTest.
Added support for a map view delegate.