fixed Longhorn banner

Author: DavertMik

_includes/hero.html

@@ -17,9 +17,9 @@ <h1>PHP Testing for <br>everyone<span class="blue">_</span></h1>
         <a class="btn btn-lg btn-default"
            href="https://sdclabs.com/codeception?utm_source=codeception.com&utm_medium=cover_section&utm_term=big_button&utm_campaign=reference">Enterprise
           Support</a>
-        <a href="http://longhornphp.com" target="_blank"><img src="/images/longhornphp.jpg" alt="Longhorn PHP Conference"></a>
       </div> <!-- /.row -->
-      <div>
+      <div class="text-left">
+        <a href="http://longhornphp.com" target="_blank"><img src="/images/longhornphp.jpg" alt="Longhorn PHP Conference"></a>
       </div>
     </div>
   </div>