How to use with http.createServer?

This seems to work, but I'm not sure if I'm missing anything (like error handling):

```js
const { compose } = require('compose-middleware')
const { createServer } = require('http')

const middleware = []
const handler = compose(middleware)

const server = createServer((req, res) => {
handler(req, res, () => res.end())
})
```

Thanks for creating this package @blakeembrey!