add ShoppingCart table style

src/MusicStore/Views/ShoppingCart/Index.cshtml

@@ -59,7 +59,7 @@
 </p>
 <div id="update-message">
 </div>
-<table id="cart-summary">
+<table id="cart-summary" class="table table-bordered table-responsive table-hover table-striped">
     <tr>
         <th>
             Album Name