title: Why are rxjs/Observable functions like range not available?
body: <p>My package.json has the rxjs dependency:</p>
  
  <pre><code>"rxjs": "5.0.0-beta.6",
  </code></pre>
  
  <p>I have imported it in my typescript code.</p>
  
  <pre><code>import {Observable} from "rxjs/Observable";
  </code></pre>
  
  <p>I'm expecting that I will be able to use functions like <code>range</code> on the Observable.  <a href="http://reactivex.io/rxjs/class/es6/Observable.js~Observable.html#static-method-range" rel="nofollow">http://reactivex.io/rxjs/class/es6/Observable.js~Observable.html#static-method-range</a></p>
  
  <p>But they are not showing up at all in the autocomplete.  If I add it anyways (just to check), it gives me an error: <code>Error TS2339: Property 'range' does not exist on type 'typeof Observable'</code>.</p>
  
  <pre><code>let x = Observable.range(1,10);  // Error! range does not exist on Observable
  let y = Observable.of([1,2,3]);  // this is ok.
  </code></pre>
  
  <p>What am I doing wrong or what have I misunderstood about this library?</p>
  
  <p>p.s. I'm using it as part of an ionic2 project.</p>