Update for http-kit-0.5.0

^ The first argument to `readRequest` determines whether chunked bodies are returned as is or decoded:

```
True:  Return chunked bodies raw (e.g. "5\r\nhello\r\n0\r\n\r\n")
False: Decode chunked bodies (e.g. "hello")
```

For `sproxy` we want `True`.  I'm not sure what you want here.