atom text editor: autocomplete doesn't work
<p>I started using atom IDE for writing HTML+ CSS code. 
autocomplete-atom-api is activated and still no code is completed neither automatically nor when I press ctrl+space. </p>

<p>This is my keymap.cson file:</p>

<pre><code>'.active.pane':
  'ctrl-space': 'autocomplete:toggle'
</code></pre>

<p>Do you know what can be the problem? </p>