title: sorting not working as per requirement in angular-dataTables
body: <p>I have an issue in my project. I am using angular dataTables. While sorting, if I have data for one column as <code>1.4</code>, <code>1.5</code>, <code>10</code>, <code>2.4</code>
  I need to return it as <code>1.4</code>, <code>1.5</code>, <code>2.4</code>, <code>10</code>. But I am getting as <code>1.4</code>, <code>1.5</code>, <code>10</code>, <code>2.4</code>. It is considering only first character I suppose.</p>
  
  <p>Is there any solution for this? Below is the code snippet.</p>
  
  <pre class="lang-js prettyprint-override"><code>$scope.dtOptions = { paging: false, searching: false };
  $scope.dtColumnDefs = [
  
  ];
  </code></pre>
  
  <p>i am not sure what i have to write in column defs for sorting</p>