code: function retrieveFilesToExclude(excludeFiles) {
    return globby.sync(excludeFiles).map(function(file) {
      return path.normalize(file);
    });
  }
docs: Expand the patterns/files (specified by the user)
  that should be ignored when building the RPM package.
  
  @param  {Array} excludeFiles patterns/files to ignore
  @return {Array}              expanded list of files to ignore