title: Exception(Crash) in iOS SKMap (Skobbler), and release memory of SKMap
body: <p>I am making an iOS app which uses SKMap (Skobbler).
  My app got crash when the below code of SKMap execute.</p>
  
  <pre><code>NSArray* advices = [[SKRoutingService sharedInstance] routeAdviceListWithDistanceFormat:SKDistanceFormatMetric];
  </code></pre>
  
  <p>and also SKMap consumes lots of memory of my device even after that page is removed from the navigation controller.
  Is there any way to release memory of SKMap?</p>