Support ios6.0 and later instead of 7.0 and later.
Support ios6.0 and later instead of 7.0 and later.

At runtime determine whether running on ios7.0 and invoke the ios7 methods.

senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library,senseobservationsystems/sense-ios-library