rename _assets to assets

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assets/src/App.vue

@@ -0,0 +1,21 @@
+<template>
+  <router-view></router-view>
+</template>
+
+<script>
+export default {
+  name: 'app',
+  mounted: function () {
+    let loading = document.getElementById('loading')
+    loading.classList.add('done')
+
+    setTimeout(function () {
+      loading.parentNode.removeChild(loading)
+    }, 200)
+  }
+}
+</script>
+
+<style>
+@import './css/styles.css';
+</style>