title: query string in $resource url
body: <p>my service has to use a query string due to limitations on the server that runs classic ASP:</p>
  
  <pre><code>angular
    .module('myServices', ['ng', 'ngResource'])
    .factory('Item', ['$resource',
       function ($resource) {
           return $resource('/api/?p=item/:id');
       }]);
  </code></pre>
  
  <p>and I want to add extra query string parameters to it:</p>
  
  <pre><code>Item.query({test: 123}, on_success, on_error);
  </code></pre>
  
  <p>but the resulting url is</p>
  
  <pre><code>/api/?p=item?test=123
  </code></pre>
  
  <p>apparently there is a bug, but how to get around it?</p>
  
  <p>EDIT: filed this at <a href="https://github.com/angular/angular.js/issues/1511">https://github.com/angular/angular.js/issues/1511</a></p>