function FollowSpline( o )
{
	this.enabled = true;
	this.spline = "";
	this.factor = 0;

	this._last_position = vec3.create();
	this._last_position_inc = vec3.create();
	this._last_rotation = quat.create();

	if(o)
		this.configure(o);
}
Allows to set an object position from a spline
@class FollowSpline
@constructor
@param {Object} object to configure from