code: function(inputFile, outputFile, content) {
                  return Promise()
                  .then(function() {
                      var outputFilePath = PathUtils.resolveInRoot(outputFolder, outputFile);
  
                      return fs.ensureFile(outputFilePath)
                      .then(function() {
                          return fs.copy(inputFile, outputFilePath);
                      });
                  });
              }
docs: Copy a file to the output folder
  It creates the required folder.
  
  @param {String} inputFile
  @param {String} outputFile
  @param {Buffer} content
  @return {Promise}