September 1, 2014 Guideline Update; README Formatting

On September 1, 2014 Apple added guidelines for HealthKit, HomeKit, TestFlight, and Extensions. They also added details to other guidelines (including a note about `creepy apps`). The new guidelines have been updated on the latest version page and added to the *All Versions* folder.

The README is now separated into sections for easier reading. Plus, there’s a new section on App Review (a little positive encouragement and further reference is nice to have). Added links to the App Store Review Guidelines.

Great project idea! Let me know if everything looks good with the PR.