message: Changed navigate to navigateBack
diff: @@ -778,14 +778,10 @@ describe('NavigationBackLinkTest', function () {
  describe('Next State and Data Navigate Back', function () {
  it('should update', function(){
  var stateNavigator = new StateNavigator([
  - { key: 's0', route: 'r0' },
  - { key: 's1', route: 'r1', trackCrumbTrail: true },
  - { key: 's2', route: 'r2', trackCrumbTrail: true },
  + { key: 's', route: 'r', trackCrumbTrail: true },
  ]);
  - var {s0, s1, s2} = stateNavigator.states;
  - s0.renderView = () => null;
  - s1.renderView = () => null;
  - s2.renderView = (_, nextState, {hello}) => (
  + var {s} = stateNavigator.states;
  + s.renderView = (_, nextState, {hello}) => (
  <div>
  <h1>{hello || 'empty'} {(nextState && nextState.key) || 'first'}</h1>
  <NavigationBackLink
  @@ -795,9 +791,9 @@ describe('NavigationBackLinkTest', function () {
  </NavigationBackLink>
  </div>
  );
  - stateNavigator.navigate('s0');
  - stateNavigator.navigate('s1', {hello: 'world'});
  - stateNavigator.navigate('s2');
  + stateNavigator.navigate('s');
  + stateNavigator.navigate('s', {hello: 'world'});
  + stateNavigator.navigate('s');
  var container = document.createElement('div');
  ReactDOM.render(
  <NavigationHandler stateNavigator={stateNavigator}>
  @@ -812,8 +808,8 @@ describe('NavigationBackLinkTest', function () {
  assert.equal(header.innerHTML, 'empty first');
  Simulate.click(link);
  header = container.querySelector<HTMLHeadingElement>('h1');
  - assert.equal(header.innerHTML, 'world s1');
  - stateNavigator.navigate('s2');
  + assert.equal(header.innerHTML, 'world s');
  + stateNavigator.navigateBack(1);
  header = container.querySelector<HTMLHeadingElement>('h1');
  assert.equal(header.innerHTML, 'empty first');
  })
  