title: Autocompletion in ACE editor
body: <p>I've found simmilar question: <a href="https://stackoverflow.com/questions/7938985/ace-editor-autocomplete-and-multiple-languages">Ace Editor autocomplete and multiple languages</a></p>
  
  <p>But the responses were that autocompletion is not supported by ACE, and according to  <a href="https://groups.google.com/forum/?fromgroups#!topic/ace-discuss/Qy27HtaYCMQ%5C" rel="noreferrer">Google group for Ace Editor</a> "It is on my wishlish for Ace and we definitively need it
  for Cloud9".</p>
  
  <p>This post is one year old and as you can see, the cloud9 supports autocompletion now:
  <a href="https://c9.io/site/features/" rel="noreferrer">https://c9.io/site/features/</a></p>
  
  <p>So is autocompletion available in Ace Editor by default? I cannot find any information about it.</p>