title: Babel 6 error "Using removed Babel 5 option"
body: <p>I'm requested to write a new app using some modules from the old one. We'd like also to test a transition to Babel 6 for the old app.</p>
  
  <p>I have two .babelrc, one wrote for Babel 5 in an upper directory and the other for Babel 6 in a sub directory:</p>
  
  <pre><code>├── .babelrc       # babel5 config
  ├── app
  │   └── foo.js     # should work with both babel5 and babel6
  └── new_app 
      ├── .babelrc   # babel6 config
      └── bar.js     # import ../app/foo.js
  </code></pre>
  
  <p>When I run Babel 6 from the sub directory, it throws an error:</p>
  
  <pre><code>Using removed Babel 5 option etc
  </code></pre>
  
  <p>So I tried to add <code>breakConfig: true</code> and it throws another error:</p>
  
  <pre><code>This is not a necessary option in Babel 6
  </code></pre>
  
  <p>Is there a way with Babel 6 to skip parsing upper configs as it was with Babel 5 using the <code>breakConfig</code> option?</p>