eslint error when using vue file extension

```
ERROR in ./src/App.vue

  ✘  https://google.com/#q=import%2Fextensions  Unexpected use of file extension "vue" for "./components/Dashboard.vue"  
  /Users/callumacrae/Sites/samknows/dashboard/src/App.vue:10:25
  import Dashboard from './components/Dashboard.vue';
                           ^
```

I'm assuming that .vue files should work by default!