🚀 Add Example && Upgrade Eslint

example/main.js

@@ -0,0 +1,12 @@
+import Vue from 'vue'
+import router from './router.js'
+
+import HocElementAffix from 'source/main.js'
+import App from './App.vue'
+
+Vue.use(HocElementAffix)
+
+new Vue({
+  router,
+  render: h => h(App)
+}).$mount('#app')