title: Chart.js xAxis linear scale : strange behavior
body: <p>I'm trying to use linear scale on x-axis in my chart.js chart.
  I add some code beause stackoverflow makes it obligatory when adding a jsfiddle url, but I don't see the point :</p>
  
  <pre><code>var options={
      scales:{
      xAxes:[{ type: "linear"}]
    }
  };
  </code></pre>
  
  <p>I'm getting a very strange chart (2nd one) : <a href="http://jsfiddle.net/t0krmau8/" rel="nofollow noreferrer">http://jsfiddle.net/t0krmau8/</a></p>
  
  <p>In the first chart, I'd like to get more space between 2 and 4 (2 times more space than between 1 and 2), that's why I'm using a linear scale.</p>
  
  <p>Am I using the linear scale wrong? Or should I use something else?</p>
  
  <p>Thanks</p>