update chapter 6 to use new routing features

Author: traceypowersg

Chapter_06/web/view/addRecipe.html

@@ -1,4 +1,4 @@
-<div ng-bind-route="add">
+<div>
   <h3>Add recipe</h3>
   Now it's your turn. Write some code to add a new recipe
 </div>

Chapter_06/web/view/editRecipe.html

@@ -1,4 +1,4 @@
-<div ng-bind-route="recipe">
+<div>
   <h3>Edit recipe</h3>
   Now it's your turn. Write some code to edit the recipe
 </div>

Chapter_06/web/view/viewRecipe.html

@@ -1,4 +1,4 @@
-<div ng-bind-route="recipe">
+<div>
   <view-recipe recipe-map="ctrl.recipeMap">
   </view-recipe>
 </div>

Chapter_06/web/view/view_recipe_component.dart

@@ -10,15 +10,14 @@ part of recipe_book;
     }
 )
 class ViewRecipeComponent {
-  Route _route;
   Map<String, Recipe> recipeMap;
-  Recipe _recipe;
+  String _recipeId;
 
   get recipe {
-    return recipeMap[_route.parameters['recipeId']];
+    return recipeMap[_recipeId];
   }
 
   ViewRecipeComponent(RouteProvider routeProvider) {
-    _route = routeProvider.route;
+    _recipeId = routeProvider.parameters['recipeId'];
   }
-}
+}