title: Default Request options in angular2 rc5
body: <p>Before the new <code>NgModule</code> I used to to extend the <code>RequestOptions</code> using a custom class and added it in <code>bootstrap</code></p>
  
  <pre><code>class MyOptions extends RequestOptions {
    constructor() {
      let token = getCookie("hyper-token");
      function getCookie(cname) {
          var name = cname + "=";
          var ca = document.cookie.split(';');
          for(var i=0; i&lt;ca.length; i++) {
              var c = ca[i];
              while (c.charAt(0)==' ') c = c.substring(1);
              if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
          }
          return "";
      }
      let startedAt = getCookie('start');
      super({
          headers: new Headers({
              'Authorization': "token " + token,
              'Content-Type': 'application/json; charset=utf-8',
              'Accept': 'application/json'
          })
      });
    }
  }
  </code></pre>
  
  <p>and then</p>
  
  <pre><code>bootstrap(AppComponent, [{ provide: RequestOptions, useClass: MyOptions}])
  </code></pre>
  
  <p>How can I do this is rc.5 with new <code>NgModule</code></p>