Adds help block

Author: jtreminio

src/Puphpet/Extension/NginxBundle/Resources/views/sections/vhost.html.twig

@@ -199,6 +199,13 @@
                     </span>
                 </label>
             </div>
+
+            <div class="help-block">
+                <p>There is currently a bug where self-signed certificate will not work in CentOS for
+                    Nginx. PRs are welcome!</p>
+            </div>
+
+            <div class="clearfix"></div>
         </div>
 
         <div class="clearfix"></div>