Fixed the example project for iOS8.

- Update FBSnapshotTestCase and Expecta+Snapshots to fix Xcode6 testing.
- Update the Example project.

The specs fail for iOS8 by *literally* a 1px difference in the rendering of the text on labels.
updated reference images for iOS8
Merge pull request #23 from dbgrandi/fixTests

Fixed the example project for iOS8.