how to Highlight Current Page with Bootstrap in Laravel 5.2

using Laravel 5.2. and need highlight current page link with bootstarp. this is My menus blade file

<div class="collapse navbar-collapse" id="app-navbar-collapse">
                <!-- Left Side Of Navbar -->
                <ul class="nav navbar-nav">
                    <li ><a href="">Home</a></li>  //menu

                     <li ><a href="">Help</a></li> //menu

                </ul>

                <!-- Right Side Of Navbar -->
                <ul class="nav navbar-nav navbar-right">
                    <!-- Authentication Links -->
                    @if (Auth::guest())
                        <li><a href="">Login</a></li>
                        <li><a href="">Register</a></li>
                    @else
                        <li class="dropdown">

                            <li> <a href="">Projects</a> </li> //menu



                            <li> <a href="">Collaborators</a> </li> //menu

what can I do? I need simple one

via Chebli Mohamed