Incorrect module import

I believe the module docs are incorrect. Based on this `lib/math.js`

``` javascript
export function sum(x, y) {
return x + y;
}
export var pi = 3.141593;
```

The docs say we can import like this

``` javascript
import math from 'lib/math';
console.log('2π = ' + math.sum(math.pi, math.pi));
```

But I think this is incorrect. In this case math is `undefined` because there is no default export. The correct import would be:

``` javascript
import * as math from 'lib/math';
```

or if you wanted to just destructure:

``` javascript
import { pi, sum } from Math;
```

I made this mistake today when dealing with code that was mixed with requires and import. These two statements below look equivalent because they similar structure which I think leads to the confusion:

``` javascript
var math = require('lib/math');
import math from 'lib/math';
```

There's a great reference here: http://www.2ality.com/2014/09/es6-modules-final.html for anyone who happens to come across this issue.