title: export 'default' (imported as 'VueFire') was not found in 'vuefire'
body: <p>Every single tutorial for how to use Firebase with Vue says that in the main.js file I have to add Vue.use(VueFire); which makes sense. But then I just get this message export 'default' (imported as 'VueFire') was not found in 'vuefire'. </p>
  
  <p>I tried using import * as VueFire from 'vuefire' and it didn't give the error message anymore, but it doesn't seem to be using the plugin.</p>
  
  <p>this is the main.js file</p>
  
  <pre><code>import Vue from 'vue'
  import App from './App.vue'
  import router from './router'
  
  import VueFire from 'vuefire'
  
  Vue.config.productionTip = false
  
  Vue.use(VueFire);
  
  new Vue({
    router,
    render: h =&gt; h(App)
  }).$mount('#app')
  </code></pre>