code: function (versionString, cb) {
        var mem = new MemoryStream(null, {readable: false});
        var url = 'https://wiseplat.github.io/solc-bin/bin/soljson-' + versionString + '.js';
        https.get(url, function (response) {
          if (response.statusCode !== 200) {
            cb(new Error('Error retrieving binary: ' + response.statusMessage));
          } else {
            response.pipe(mem);
            response.on('end', function () {
              cb(null, setupMethods(requireFromString(mem.toString(), 'soljson-' + versionString + '.js')));
            });
          }
        }).on('error', function (error) {
          cb(error);
        });
      }
docs: Loads the compiler of the given version from the github repository instead of from the local filesystem.