title: Angular2 HTTP request not appending headers
body: <p>In my application, I am trying to send a quick test request to my API to test my authentication.  When a button is clicked, this function is called, which creates an Authorization header and makes an HTTP request:</p>
  
  <pre><code>  public test() {
      const headers: Headers = new Headers();
      headers.append('Authorization', 'Bearer ' + this.auth.token);
      this.http.get('http://localhost:62940/api/ping/secure', { headers: headers }).subscribe(x =&gt; {
        console.log(x);
      });
    }
  </code></pre>
  
  <p>However, when I'm debugging (or analyzing traffic using Fiddler), <code>headers</code> has the header that I created, but nothing is being appended to the Http request. </p>