title: Customize close button of modal
body: <p>I used <a href="http://mgcrea.github.io/angular-strap/#/modals" rel="nofollow noreferrer">modal angular strap</a> in controller, as the following: </p>
  
  <pre><code>$scope.modal = $modal({
     scope: $scope, 
     title: 'My Title', 
     content: text, 
     html: true, 
     contentTemplate: 'views/partials/myTemplate.html', 
     show: true, 
     keyboard: false, 
     backdrop: "static"
  });
  </code></pre>
  
  <p>I need to customize the action of close button in the top of modal at the following image: 
  <img src="https://i.stack.imgur.com/hiHfq.png" alt="Modal Example">. </p>
  
  <p>How can I overwrite the close action of top button ?</p>