code: function (patternFolder, files, cb) {
      var file, patterns = [];
      files.forEach(function readPattern(pattern) {
        file = {filename: pattern};
        file.content = grunt.file.read(patternFolder + '/' + file.filename);
        patterns.push(file);
      });
  
      // call the outputPatterns function that generates
      // the html for every pattern
      outputPatterns(patternFolder, patterns, cb);
    }
docs: walks through the pattern folder reads all the contents of the pattern files