Use ESM build in demo

Author: morkro

src/Demo.vue

@@ -66,13 +66,8 @@
 </template>
 
 <script>
-  import A11yDialog from '../src/A11yDialog.vue'
-
   export default {
     name: 'DialogDemo',
-    components: {
-      'a11y-dialog': A11yDialog,
-    },
     data: () => ({
       dialog: null,
       role: 'dialog',

src/demo.js

@@ -1,5 +1,6 @@
 import { createApp } from 'vue'
 import Demo from './Demo.vue'
+import A11yDialog from '../dist/vue-a11y-dialog.esm.js'
 import './demo.css'
 
-createApp(Demo).mount('#app')
+createApp(Demo).use(A11yDialog).mount('#app')