add a nav for test page

test/app.vue

@@ -2,8 +2,41 @@
     @import "../src/styles/index.less";
     @import "../src/styles/package.less";
 </style>
+<style scoped>
+nav {
+    margin-bottom: 40px;
+}
+
+li {
+    display: inline-block;
+}
+
+li + li {
+    border-left: solid 1px #bbb;
+    padding-left: 5px;
+    margin-left: 5px;
+}
+
+.v-link-active {
+    color: #bbb;
+}
+</style>
 <template>
     <div>
+        <nav>
+            <ul>
+                <li><a v-link="'/button'">Button</a></li>
+                <li><a v-link="'/card'">Card</a></li>
+                <li><a v-link="'/message'">Message</a></li>
+                <li><a v-link="'/more'">More</a></li>
+                <li><a v-link="'/page'">Page</a></li>
+                <li><a v-link="'/poptip'">Poptip</a></li>
+                <li><a v-link="'/radio'">Radio</a></li>
+                <li><a v-link="'/select'">Select</a></li>
+                <li><a v-link="'/slider'">Slider</a></li>
+                <li><a v-link="'/step'">Step</a></li>
+            </ul>
+        </nav>
         <router-view></router-view>
     </div>
 </template>