title: How to show GKPath in GameplayKit
body: <p>is there a trick to show a GKPath?</p>
  
  <p>for example my path:</p>
  
  <pre><code>class ScenarioPath: GKPath {
  
      //SET
      //   |  |  |  |  |  |
      // --A--B--C--D--E--F--
      //   |  |  |  |  |  |
      //6 punti con raggio quasi 600 e lato 500 va bene per scenario 2K * 3K
      static let lato = Float(500.0)
      static let maxY = Float(0.0)
      static let radius : Float = 600.0
  
      static let maxYNormalize = maxY - radius
  
      static let pts = [
          vector_float2(-lato,maxYNormalize),
          vector_float2(+lato,maxYNormalize),
          vector_float2(-2*lato,maxYNormalize),
          vector_float2(+2*lato,maxYNormalize),
          vector_float2(-3*lato,maxYNormalize),
          vector_float2(+3*lato,maxYNormalize)]
  
  
      init () {
          super.init(points: UnsafeMutablePointer(ScenarioPath.pts), count: ScenarioPath.pts.count, radius: ScenarioPath.radius, cyclical: true)
      }
  
  
  }
  </code></pre>
  
  <p>I'm looking for a simple func to show this path.
  Thanks</p>