title: Using an index with ng-table over multiple pages
body: <p>I am using ng-table to display the below data. </p>
  
  <p>I want the first column to be an index number that persists over pages (eg page with rows 100-199 should have index 100-199).</p>
  
  <p>Currently the index resets and starts at 0 every page. I have also tried </p>
  
  <pre><code>{{ (FarmParams.page() * FarmParams.count()) + index }}
  </code></pre>
  
  <p>but the first page will start at index 100 in this case.</p>
  
  <pre><code>&lt;table ng-table="vm.FarmParams" class="table table-hover"&gt;
  &lt;tr ng-repeat="row in $data"&gt;
      &lt;td data-title="''" filter="{index : 'text'}" sortable="'index'"&gt;{{$index}}&lt;/td&gt;
      &lt;td data-title="'Planted:'" filter="{planted : 'text'}" sortable="'planted'"&gt;{{row.planted}}&lt;/td&gt;
      &lt;td data-title="'Harvested'" filter="{harvested: 'text'}" sortable="'harvested'"&gt;{{row.harvested}} &lt;/td&gt;
  &lt;/tr&gt;
  &lt;/table&gt;
  </code></pre>