text: // oauth configuration for provider services that are used.
  module.exports = () => {
      return {
          google: {
              scope: [
                  'https://www.googleapis.com/auth/drive.readonly'
              ],
              callback: '/drive/callback'
          },
          dropbox: {
              authorize_url: 'https://www.dropbox.com/oauth2/authorize',
              access_url: 'https://api.dropbox.com/oauth2/token',
              callback: '/dropbox/callback'
          },
          instagram: {
              callback: '/instagram/callback'
          }
      };
  };
  