title: How can I complete Observable in RxJS
body: <p>Let's say we have an <strong>Observable</strong>:</p>
  
  <pre><code>var observable = Rx.Observable
      .fromEvent(document.getElementById('emitter'), 'click');
  </code></pre>
  
  <p>How can I make it <strong>Complete</strong> (what will trigger <strong>onComplete</strong> event for all subscribed <strong>Observers</strong>) ?</p>