old_contents: module.exports = function(hostname) {
      // Settings for geojson.io
      L.mapbox.accessToken = 'pk.eyJ1IjoibWFwYm94IiwiYSI6IlpIdEpjOHcifQ.Cldl4wq_T5KOgxhLvbjE-w';
      if (hostname === 'geojson.io') {
          return {
              client_id: '62c753fd0faf18392d85',
              gatekeeper_url: 'https://geojsonioauth.herokuapp.com',
          };
      // Customize these settings for your own development/deployment
      // version of geojson.io.
      } else {
          var MapboxAPITile = 'http://a.tiles.mapbox.com';
          L.mapbox.config.HTTP_URL = MapboxAPITile + '/v4';
          L.mapbox.config.HTTPS_URL = MapboxAPITile + '/v4';
          L.mapbox.config.FORCE_HTTPS = true;
          L.mapbox.config.REQUIRE_ACCESS_TOKEN = true;
          return {
              GithubAPI: null,
              client_id: 'bb7bbe70bd1f707125bc',
              gatekeeper_url: 'https://localhostauth.herokuapp.com'
          };
      }
  };
new_contents: module.exports = function(hostname) {
      // Settings for geojson.io
      L.mapbox.accessToken = 'pk.eyJ1IjoibWFwYm94IiwiYSI6IlpIdEpjOHcifQ.Cldl4wq_T5KOgxhLvbjE-w';
      if (hostname === 'geojson.io') {
          return {
              client_id: '62c753fd0faf18392d85',
              gatekeeper_url: 'https://geojsonioauth.herokuapp.com',
          };
      // Customize these settings for your own development/deployment
      // version of geojson.io.
      } else {
          L.mapbox.config.HTTP_URL = 'http://a.tiles.mapbox.com/v4';
          L.mapbox.config.HTTPS_URL = 'https://a.tiles.mapbox.com/v4';
          L.mapbox.config.FORCE_HTTPS = true;
          L.mapbox.config.REQUIRE_ACCESS_TOKEN = true;
          return {
              GithubAPI: null,
              client_id: 'bb7bbe70bd1f707125bc',
              gatekeeper_url: 'https://localhostauth.herokuapp.com'
          };
      }
  };
subject: Fix HTTPS_URL.