Laravel 5 VueJS not working

I'm trying to use vuejs in my fresh laravel setup. I run the follwing commands in my command line

npm install
npm run dev

This commands runs without any errors. When I import the default VUE componet located under ~/ressources/assets/components/ExampleComponent.vue in my template nothing happends.

@section('content')
    <example-component></example-component>
@endsection

Here the app.js

require('./bootstrap');

window.Vue = require('vue');

Vue.component('example-component', require('./components/ExampleComponent.vue'));

const app = new Vue({
    el: '#app'
});

via Chebli Mohamed