test: add e2e tests

fix: boolean attributes client side

test/fixtures/basic/App.vue

@@ -0,0 +1,21 @@
+<template>
+  <div id="app">
+    <h1>Basic</h1>
+    <router-view></router-view>
+    <p>Inspect Element to see the meta info</p>
+  </div>
+</template>
+
+<script>
+export default {
+  metaInfo: {
+    meta: [
+      { vmid: 'charset', charset: 'utf-8' }
+    ]
+  },
+  mounted() {
+    this.$router.afterEach((to, from) => this.$emit('routeChanged', to, from))
+    window.$vueMeta = this
+  }
+}
+</script>