Updated to Sep. 1, 2014 Guidelines

On September 1, 2014 Apple added guidelines for HealthKit, HomeKit,
TestFlight, and Extensions. They also added more details to other
guidelines.
Updated Readme

README formatting updated. 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.
Merge pull request #2 from Sam-Spencer/master

September 1, 2014 Guideline Update; README Formatting