title: Configure KnpPaginator to work with Twitter Bootstrap
body: <p><img src="https://i.stack.imgur.com/8QFKC.png" alt="Vendor folder"><br/>i'm trying to apply twitter bootstrap css style to my knp pagination without modifying the vendor.<br/>
  Is there a way to configure KnpPaginator so to detect existing bootstrap css style sheets?because as the screenshot shows, it is build to work with bootstrap.</p>