title: Vue is not defined Bootstrap-vue
body: <p>I've installed in vue js bootstrap vue, with the following command
  yarn add bootstrap-vue bootstrap axios</p>
  <p>Code:
  <a href="https://i.stack.imgur.com/oTBxn.png" rel="noreferrer"><img src="https://i.stack.imgur.com/oTBxn.png" alt="Image 1" /></a></p>
  <p><a href="https://i.stack.imgur.com/ynGxF.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ynGxF.png" alt="enter image description here" /></a></p>
  <pre><code>    ERROR  Failed to compile with 1 errors                                                                                             2:56:01 AM
      
       error  in ./src/main.js
  
  Module Error (from ./node_modules/eslint-loader/index.js):
  
  /home/ronin/Documents/V2/test/src/main.js
    7:1  error  'Vue' is not defined  no-undef
  
  ✖ 1 problem (1 error, 0 warnings)
  
  
   @ multi (webpack)-dev-server/client?http://192.168.0.161:8080&amp;sockPath=/sockjs-node (webpack)/hot/dev-server.js ./src/main.js
  </code></pre>