Can support graphql ?

https://github.com/jaredhanson/passport-local/blob/master/lib/strategy.js#L71

The parameters of `graphql` are: 

```js
{
  body: {
    query: '{\n\tlogin(username: "xxx" password: "xxx") {\n    id\n    username\n  }\n}',
    variables: null,
    operationName: null
  }
}
```

It cannot be resolved.