Configuring view hierarchy into your state config

stateConfig.js

$stateProvider.state('tab.feeds', {
 url: 'feeds',
 views: {
  'tab-feeds': {
   templateUrl: 'features/feeds/feeds.html', 
   controller: 'FeedsCtrl'
  }
 }
}.state('tab.feeds/feed', {
 url: 'feeds/:feed',
 views: {
  'tab-feeds': {
   templateUrl: 'features/feeds/feed.html', 
   controller: 'FeedCtrl'
  }
 }
}