title: Retrofit2 Authorization - Global Interceptor for access token
body: <p>I'm trying to use <code>Retrofit2</code>, 
  I want to add <code>Token</code> to my <code>Header</code> Like this:</p>
  
  <p><code>Authorization: Bearer  Token</code>
  but the <code>code</code> below doesn't work:</p>
  
  <pre><code>public interface APIService {
      @Headers({"Authorization", "Bearer "+ token})
      @GET("api/Profiles/GetProfile?id={id}")
      Call&lt;UserProfile&gt; getUser(@Path("id") String id);
  }
  </code></pre>
  
  <p>My server is <code>asp.net webApi</code>. Please help what should I do?</p>