message: Renamed variables to avoid conflict
  Already variable called nextCrumb
diff: @@ -95,10 +95,10 @@ class NavigationMotion extends React.Component<any, any> {
  getScenes(){
  var {crumbs, nextCrumb} = this.getStateNavigator().stateContext;
  return crumbs.concat(nextCrumb).map(({state, data, url}, index, crumbsAndNext) => {
  - var previousCrumbs = crumbsAndNext.slice(0, index - 1);
  - var nextCrumb = crumbsAndNext[index + 1];
  - return {key: index, state, data, url, crumbs: previousCrumbs, nextState: nextCrumb && nextCrumb.state,
  - nextData: nextCrumb && nextCrumb.data, scene: this.state.scenes[index], mount: url === nextCrumb.url};
  + var preCrumbs = crumbsAndNext.slice(0, index - 1);
  + var postCrumb = crumbsAndNext[index + 1];
  + return {key: index, state, data, url, crumbs: preCrumbs, nextState: postCrumb && postCrumb.state,
  + nextData: postCrumb && postCrumb.data, scene: this.state.scenes[index], mount: url === nextCrumb.url};
  });
  }
  getStyle(mounted, mount, {state, data, crumbs, nextState, nextData}) {
  