title: Uber price/time estimate API now returns 401 unauthorized
body: <p>I have been using an ionic app that I integrated Uber API time and price estimates for. I have registered my app in the uber developer studio and am including the server_token in the
  requests like shown below. These were working fine from my app about a month or two ago but now I am getting 401 unauthorized "No authentication provided." error. When I take the same
  URL with the server token and copy and paste into a new browser window I am able to get the response back with estimates. Am I missing something? These were working for me earlier and I am not logging the users
  into Uber just want to get general price/time estimates. I have not setup any general scopes for the app since I thought those are only needed for OAuth. Do I need to request these for the estimate API calls too?</p>
  
  <pre><code>https://api.uber.com/v1/estimates/price?start_latitude=%2033.8075191&amp;start_longitude=-84.3750251&amp;end_latitude=33.8092502&amp;end_longitude=%20-84.36099030000003&amp;server_token=&lt;SERVER_TOKEN&gt;
  </code></pre>
  
  <p>Here is the code block i am using to call the API URL</p>
  
  <pre><code>    var uberPricePromise = $http.get(createUberUrlForMetric('price'))
        .then(function (response) {
  
          var uberPrices = response;
  
          // format price from Uber for the view
  
        }, function (error) {
          console.log(error);
        });
  
  
      function createUberUrlForMetric(metric) {
        return 'https://api.uber.com/v1.2/estimates/' + metric + '?start_latitude= ' + PlacesService.currentLocation.lat +
        '&amp;start_longitude=' + PlacesService.currentLocation.lng +
        '&amp;end_latitude=' + $scope.place.geometry.location.lat() +
        '&amp;end_longitude= ' + $scope.place.geometry.location.lng() +
        '&amp;server_token=&lt;SERVER_TOKEN&gt;;
      }
  </code></pre>