local mode don't work without credentials

[langovoi]

When I try to use danger local without BitBucket or GitHub credentials i got error on this line

The DANGER_GITHUB_API_TOKEN/DANGER_BITBUCKETSERVER_HOST environmental variable is missing

[orta]

Ah yeah, this is likely an oversight because I have DANGER_GITHUB_API_TOKEN in my ENV, it should be passing in the FakeCI env vars from the command