code: function(stage) {
        var fileStart = options.dir + '/' + stage;
        for (var ext in input) {
          if (grunt.file.exists(fileStart + '.' + ext)) {
            return input[ext].read(fileStart + '.' + ext);
          }
        }
        return false;
      }
docs: /*
  Tries to load data for specified stage.
  This should be in <options.dir>/<stage>.json or .json5.
  Returns an Object, or false if no file was found.
  Throws up a fail if a .json5 file was found but the JSON5 library is not installed.