title: Error on exporting React Components in index.js file
body: <p>At one point I was able to create an index.js file in all my directories (components, stores, etc) that exported all my components similar to this, for easy access:</p>
  
  <pre><code>export ComponentA from './ComponentA/ComponentA';
  export ComponentB from './ComponentB/ComponentB';
  export ComponentC from './ComponentC/ComponentC';
  </code></pre>
  
  <p>Then I would import only those classes that I needed from another file like this</p>
  
  <pre><code>import { ComponentA, ComponentC } from './components';
  </code></pre>
  
  <p>For some reason, now I am getting an error now, and not sure why </p>
  
  <pre><code>ERROR in ./app/containers/index.js
  Module build failed: SyntaxError: /Users/abritez/Documents/Projects/React-LTI-Toolprovider/app/containers/index.js: Unexpected token (1:7)
  &gt; 1 | export Widgets from './Widgets/Widgets';
      |        ^
    2 | 
      at Parser.pp.raise (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/location.js:24:13)
      at Parser.pp.unexpected (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/util.js:82:8)
      at Parser.pp.expect (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/util.js:76:33)
      at Parser.pp.parseExportSpecifiers (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/statement.js:766:8)
      at Parser.pp.parseExport (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/statement.js:701:28)
      at Parser.parseExport (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/plugins/flow.js:679:20)
      at Parser.pp.parseStatement (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/statement.js:115:90)
      at Parser.parseStatement (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/plugins/flow.js:621:22)
      at Parser.pp.parseTopLevel (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/statement.js:30:21)
      at Parser.parse (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/parser/index.js:70:17)
      at Object.parse (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/node_modules/babylon/lib/index.js:45:50)
      at Object.exports.default (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/lib/helpers/parse.js:36:18)
      at File.parse (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/lib/transformation/file/index.js:574:40)
      at File.parseCode (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/lib/transformation/file/index.js:691:20)
      at /Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/lib/transformation/pipeline.js:167:12
      at File.wrap (/Users/abritez/Documents/Projects/React-LTI-Toolprovider/node_modules/babel-loader/node_modules/babel-core/lib/transformation/file/index.js:639:16)
   @ ./app/routes.js 27:18-41
  </code></pre>