- available: check if HealthKit is supported (iOS8+, not on iPad)
- requestAuthorization: ask some or all permissions up front
- readDateOfBirth: formatted as yyyy-MM-dd
- readGender: output = male|female|unknown
- readWeight: pass in unit (g=gram, kg=kilogram, oz=ounce, lb=pound, st=stone)
- saveWeight: pass in unit (g=gram, kg=kilogram, oz=ounce, lb=pound, st=stone) and amount
- readHeight: pass in unit (mm=millimeter, cm=centimeter, m=meter, in=inch, ft=foot)
- saveHeight: pass in unit (mm=millimeter, cm=centimeter, m=meter, in=inch, ft=foot) and amount
- saveWorkout: see the example for instructions
- findWorkouts: no params yet, so this will return all workouts ever of any type
- Make sure your app id has the 'HealthKit' entitlement when this plugin is installed.
- Also, make sure your app and AppStore description complies with these Apple review guidelines: https://developer.apple.com/app-store/review/guidelines/#healthkit
grunt jshintto check the javascript
