title: Error evaluating App.Product.findQuery
body: <p>I'm trying to get data from an API like this:</p>
  
  <pre><code>    App.Store = DS.Store.extend({
          revision: 12,
          adapter: DS.RESTAdapter.create({
              host: 'http://api.my-api/v1/products(name=my-name)'
          })
      });
  
      App.Product = DS.Model.extend({
          name: DS.attr('string')
      });
  
      App.ApplicationRoute = Ember.Route.extend({
          model: function () {
              return App.Product.findQuery({show: 'sku,name', format: 'json', apiKey: 'MyApIkEy123'});
          }
      });
  </code></pre>
  
  <p>The error I get in the console is:</p>
  
  <p><code>Error while processing route: index undefined is not a function (evaluating 'App.Product.findQuery({show: 'sku,name', format: 'json', apiKey: 'MyApIkEy123'})')</code></p>
  
  <p>The JSON should look like this:</p>
  
  <pre><code>    {
          "from": 1,
          "to": 10,
          "total": 10,
          "products": [
              {
                  "sku": 1234567,
                  "name": "Great Product"
              }
      }
  </code></pre>