title: Angular 2 http.get with params
body: <p>I want to send query parameters within a GET request. My class looks like this:</p>
  
  <pre><code> @Injectable()
   export class Loader implements TranslateLoader{
    constructor(private http: Http){
     }
     getTranslation(lang: string): Observable&lt;any&gt;
     {
       return this.http.get(routes.Localization.Get) ;// in that place I need to pass params
     }
   }
  </code></pre>
  
  <p>How can I do this?</p>