message: fix(ns-router-link): navigate with urlTree
  closes
diff: @@ -76,21 +76,19 @@ export class NSRouterLink implements OnChanges { // tslint:disable-line:directiv
  JSON.stringify(this.pageTransition));
  const extras = this.getExtras();
  - this.navigator.navigate(this.commands, extras);
  + this.navigator.navigateByUrl(this.urlTree, extras);
  }
  - private getExtras() {
  + private getExtras(): NavigationExtras & NavigationOptions {
  const transition = this.getTransition();
  - const extras: NavigationExtras & NavigationOptions = {
  + return {
  queryParams: this.queryParams,
  fragment: this.fragment,
  clearHistory: this.clearHistory,
  animated: transition.animated,
  transition: transition.transition,
  + relativeTo: this.currentRoute,
  };
  -
  - return (<any>Object).assign(extras,
  - this.currentRoute.toString() !== "Route(url:'', path:'')" && this.currentRoute);
  }
  private getTransition(): { animated: boolean, transition?: NavigationTransition } {
  