anchor.diff:  
       <md-button ng-click="indexController.gotoPage(number)"
         ng-disabled="indexController.disablePageButton(number)"
  -      ng-repeat="number in indexController.pagination.pages()">
  +      ng-repeat="number in indexController.pagination.pages()"
  +      aria-label="Go to page {{ number }}">
         <span ng-class="{ active: indexController.pagination.page == number }"
           class="pageNumber">{{ number }}</span>
       </md-button>
  
positive.code:     <span class="dots" ng-show="indexController.showRightDots()">&ctdot;</span>
  
      <md-button class="md-button" ng-click="indexController.gotoNextPage()"
        ng-disabled="indexController.disableNextPageButton()">
        <md-icon md-svg-icon="navigation:ic_arrow_forward_24px"></md-icon>
      </md-button>
    </nav>
  
negative.code: 
    <nav class="pagination">
      <md-button ng-click="indexController.gotoPrevPage()"
        ng-disabled="indexController.disablePrevPageButton()"
        aria-label="Go to previous page">
        <md-icon md-svg-icon="navigation:ic_arrow_back_24px"></md-icon>
      </md-button>
  
  