[Update] Lookback (0.6.0)

* New UI to start recording. This new UI (in the form of
  LookbackRecordingViewController) is used instead of
  LookbackSettingsViewController when you shake the device. You can still access
  the Settings from a button in this new UI. Since it presents itself in a
  separate window, the Recording VC should work in any app even if you don't
  have a root view controller.
* Fix crash on 64-bit iPad. The crash was in [GFIOSurfaceVideoInput
  initForMainScreenWithSync:], if you saw it in your backtrace, this bug has now
  been fixed.
* Redesigned Settings VC.
* From the Recording VC, you can now access a list of experiences that are being
  uploaded, and the ten most recent uploads. Swipe left on an experience to share
  it, or abort the upload and remove it.
* Fix a "crash loop" bug. Lookback is supposed to not load if it thinks it caused
  the most recent crash; this feature had a bug, causing your app to crash
  continuously until you reinstall it.
* Uses SSL to communicate with our backend.
* Note that if you're installing Lookback into your project manually, there are
  a few new png files that you need to add to your project, and some that have
  been removed.