title: Add custom button in actions column in ng2-smart-table in Angular 2
body: <p>In an <code>ng2-smart-table</code> in Angular 2 I want to add a new button in the actions column and by clicking on this button it will route to another page.
  This code has the add, edit, and delete buttons. I tried to make the new button like this but it's not working:</p>
  
  <pre class="lang-none prettyprint-override"><code>settings = {
  
      add: {
        addButtonContent: '&lt;i  class="ion-ios-plus-outline"&gt;&lt;/i&gt;',
        createButtonContent: '&lt;i class="ion-checkmark" &gt;&lt;/i&gt;',
        cancelButtonContent: '&lt;i class="ion-close"&gt;&lt;/i&gt;',
        confirmCreate: true
      },
      edit: {
        editButtonContent: '&lt;i class="ion-edit"&gt;&lt;/i&gt;',
        saveButtonContent: '&lt;i class="ion-checkmark"&gt;&lt;/i&gt;',
        cancelButtonContent: '&lt;i class="ion-close"&gt;&lt;/i&gt;',
        confirmSave: true
      },
      delete: {
        deleteButtonContent: '&lt;i class="ion-trash-a"&gt;&lt;/i&gt;',
        confirmDelete: true
      }, 
  </code></pre>
  
  <p>How can I add the button? I searched the <a href="https://akveo.github.io/ng2-smart-table/documentation" rel="noreferrer">documentation</a>  and I couldn't find anything related to this.   </p>