Currying interface

Lets add or even replace the current interface with the currying one:

```js
const Button = styled('div')({
  color: 'red'
})
```

The nice thing about it is:

```js
const div = styled('div')

const Button = div({
  color: 'red'
})

const AnotherButton = div({
  color: 'green'
})
```