title: Everything I draw on canvas using Fabric is in offset
body: <p>When I draw on the canvas using Fabric lib everything is in offset.
  Here is the code:</p>
  
  <pre><code>Fcanvas = new fabric.Canvas('c');
  
  var circle = new fabric.Circle({radius: 100, fill: 'green', left: 100, top: 100});
  var triangle = new fabric.Triangle({width: 20, height: 30, fill: 'blue', left: 10, top: 10});
  var line = new fabric.Line([0, 0, 100, 100], {stroke: 'yellow', strokeWidth: 3, selectable: false});
  
  Fcanvas.add(circle, triangle,line);
  Fcanvas.add(new fabric.Line([0, 20, 530, 20], {stroke: 'red', strokeWidth: 3, selectable: false}));
  </code></pre>
  
  <p>and on JSFiddle: <a href="http://jsfiddle.net/orihadar/h4unywm3/" rel="nofollow">http://jsfiddle.net/orihadar/h4unywm3/</a></p>