title: How to access a component property from App.vue
body: <p>I used vue-loader to help me install vue and webpack
  I have a file called App.vue</p>
  
  <p>In App.vue I added a component called widget. If I clicked some button there's a function that set the <code>btnClicked = true</code> hence the widget appears </p>
  
  <pre><code>&lt;widget v-show="btnClicked"&gt;&lt;/widget&gt;
  </code></pre>
  
  <p>but I also want that function to access the <code>widgetShowMe</code>, it's a property in my component.</p>
  
  <p>I want the function activated in my <code>App.vue</code> to also set <strong><code>widgetShowMe = true</code></strong>
  I tried this but it didn't work </p>
  
  <pre><code>methods:{
    btnClickedFunc () {
      this.btnClicked = true;
      Widget.widgetShowMe = true; 
    }
  }
  </code></pre>