add a nav for test page

test/routers/tag.vue

@@ -1,26 +0,0 @@
-<style>
-    body{
-        padding: 50px;
-    }
-</style>
-<template>
-    <Slider :value="10" :tip-format="format">
-
-    </Slider>
-</template>
-<script>
-    import { Slider } from 'iview';
-    export default {
-        components: { Slider },
-        data () {
-            return {
-
-            }
-        },
-        methods: {
-            format (val) {
-                return `进度：${val}%`
-            }
-        }
-    }
-</script>