code: function addCompressionToFile(filePath, compression) {
          var srcFilePath = filePath.replace(rootFolder, "").replace(compression.fileExtension, "");
          var existingFile = files[srcFilePath];
          if (!existingFile) {
              files[srcFilePath] = { compressions: [compression] };
          } else {
              existingFile.compressions.push(compression);
          }
      }
docs: Adds the compression to the file's list of available compressions
  @param {string} filePath
  @param {Compression} compression