convert Directory Reference

Files
	AxisAlignedBox.hh
	Color.hh
	DiscoveryType.hh
	FuelMetadata.hh
	GeometryType.hh
	Inertial.hh
	JointType.hh
	PixelFormatType.hh
	Plane.hh
	Pose.hh
	Quaternion.hh
	ShaderType.hh
	SphericalCoordinates.hh
	StdTypes.hh
	Vector2.hh
	Vector3.hh