title: Angular 2 access base href
body: <p>I have a code in my solution which gets baseHref of an app</p>
  
  <pre><code>constructor( private router: Router) {
      let baseHref = this.router._location._baseHref;
  </code></pre>
  
  <p>You could see what I am getting it via private properties. Is there other way to get base url? aka the url before router added it's parts?</p>
  
  <p>I am using angular2 rc4</p>
  
  <p>Thanks</p>