Github Strategy: Must specify access token via Authorization header

[kumy]

I tested Github strategy and get this error

url: https://api.github.com/user?access_token=gho_xxxxxxxx

{
  "message": "Must specify access token via Authorization header. https://developer.github.com/changes/2020-02-10-deprecating-auth-through-query-param",
  "documentation_url": "https://docs.github.com/v3/#oauth2-token-sent-in-a-header"
}

According to this doc, new syntax is to use header

curl -H 'Authorization: token my_access_token' https://api.github.com/user

[kumy]

@ikkez Please see PR #13