module support in eyeglass-exports.js

Nobody has claimed this yet.

I'm using ember-cli-eyeglass to import an eyeglass-aware package into an Ember project. If the package contains
```js
// eyeglass-exports.js
import someSupport from './lib/some-support'
export default …
```
then I get a syntax error on `import`. It works if I change to
```js
// eyeglass-exports.js
const someSupport = require('./lib/some-support')
module.exports = …
```

I don't know whether this belongs in eyeglass, babel-eyeglass, ember-cli-eyeglass, or somewhere else.

Start by tracing how eyeglass-exports.js is loaded and where its JavaScript syntax is parsed. Compare the failing import/export form with the working require/module.exports form, then determine whether the behavior belongs in eyeglass, babel-eyeglass, or ember-cli-eyeglass. Done means an eyeglass-aware package can use the shown module syntax without a syntax error.

Written by the indexing model from the issue text.