message: add pre publish script so it will be easier to do not miss the necessary files
diff: "build": "npm run build-index & npm run build-transformer",
  "compileTransformer": "tsc --lib es6,dom --target ES5 src/transformer/transformer.ts",
  "test": "karma start config/karma/karma.config.js",
  - "test-framework": "karma start config/karma/karma.config.framework.js"
  + "test-framework": "karma start config/karma/karma.config.framework.js",
  + "prepublishOnly": "npm run build"
  },
  "keywords": [
  "typescript",
  