title: Angular2 ng2 smart table sorting as numeric
body: <p>I have implemented the <code>ng2 smart table grid</code> for listing</p>
  
  <pre><code>https://akveo.github.io/ng2-smart-table/#/documentation
  </code></pre>
  
  <p>Here I want to integrate the sorting for 2 columns. For this I used the code</p>
  
  <pre><code> storeid: {
    title: 'Store #',
    sort: true
  },
  </code></pre>
  
  <p>But this is not numeric sorting. It sorts as <code>1,10,11...</code> instead of <code>1,2,3...</code>
  Is there any example for <code>comparefunction</code> for the particular column.</p>
  
  <p>Please help me.</p>