add item set with scaffold

app/views/settings/item_sets/index.html.erb

@@ -0,0 +1,31 @@
+<p id="notice"><%= notice %></p>
+
+<h1>Settings Item Sets</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th>Name</th>
+      <th>Min selectable qty</th>
+      <th>Max selectable qty</th>
+      <th colspan="3"></th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% @settings_item_sets.each do |settings_item_set| %>
+      <tr>
+        <td><%= settings_item_set.name %></td>
+        <td><%= settings_item_set.min_selectable_qty %></td>
+        <td><%= settings_item_set.max_selectable_qty %></td>
+        <td><%= link_to 'Show', settings_item_set %></td>
+        <td><%= link_to 'Edit', edit_settings_item_set_path(settings_item_set) %></td>
+        <td><%= link_to 'Destroy', settings_item_set, method: :delete, data: { confirm: 'Are you sure?' } %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<br>
+
+<%= link_to 'New Settings Item Set', new_settings_item_set_path %>