Github works similar to Facebook (OAuth).
Register a new application at GitHub Developers, set the callback URL to http://example.com/complete/github/ replacing example.com with your domain.
Fill App Id and App Secret values in the settings:
SOCIAL_AUTH_GITHUB_KEY = ''
SOCIAL_AUTH_GITHUB_SECRET = ''
Also it’s possible to define extra permissions with:
SOCIAL_AUTH_GITHUB_SCOPE = [...]
When defining authentication for organizations, use the GithubOrganizationOAuth2 backend instead. The settings are the same than the non-organization backend, but the names must be:
SOCIAL_AUTH_GITHUB_ORG_*
Be sure to define the organization name using the setting:
SOCIAL_AUTH_GITHUB_ORG_NAME = ''
This name will be used to check that the user really belongs to the given organization and discard it in case he’s not part of it.