Acceptance Tests

I have created a new test target for creating tests using the [KIF iOS Integration Testing Framework](https://github.com/kif-framework/KIF).

I have created a couple of tests around device orientation. These tests don't check the view bounds for validity, but they do provide a nice integrated way of reproducing some animation bugs. As with regular XCTests, you can run individual tests from the gutter, or use the Test Navigator.

Installing the pods should be optional, they are required only by the Acceptance Tests target.

Excited to hear some feedback.