Humana's iOS app now works with HealthKit, offers rewards

Apple's HealthKit finally got some much-needed integration over the weekend, and the apps taking advantage keep trickling in. Some, like Centered, aim to bring balance via meditation -- not for everyone. Healthcare provider Humana has updated their app to work with Apple's platform, and it might be the first to give you reason to use HealthKit. HumanaVitality is free to …