func (gac *GitHubOAuthConfig) InitGitHubOAuthConfig(cookie *sessions.CookieStore) {
	gob.Register(&oauth2.Token{})
	gac.CookieStore = cookie
}
func (gac *GitHubOAuthConfig) InitGitHubOAuthConfig(cookie *sessions.CookieStore) {
	gob.Register(&oauth2.Token{})
	gac.CookieStore = cookie
}
// InitGitHubOAuthConfig creates an OAuthClient using GitHubOAuth config and a Cookie Store
// to retain user credentials.