Import spec

Export base primitives from the `main` entrypoint:

```js
import { Box, Text, Button } from 'elemental-react';
```

Export components from individual files also for better bundle size management e.g.

```js
import BaseButton from 'elemental-react/lib/Button';

export default extend(BaseButton, {
bg: 'green',
outlined: true,
borderColor: 'black',
'&:hover': {
bg: 'greens.7'
},
});
```