--updated WheelTick definition
--added AtmosphericPressure, WheelSpeed, BrakeOperation, IgnitionStatus, and YawRate interfaces
--renamed Brake interface to BrakeMaintenance interface as that is what it truly was and to avoid name collisions
--added vehicle type enum
--fixed copy and past errors
--renamed IgnitionStatus to IgnitionTime interface
Merge pull request #35 from occops/master

Added new interfaces and data elements
Vehicle interface, availability, data changes

Added Vadim's VehicleInterface and availability proposal.
Added ButtonEvent, DrivingMode and NightMode to data spec
moved vehiclecommon to this spec. fixed some html errors