message: Adds typings reference to package.json
diff: "bugs": {
  "url": "https://github.com/gitbrent/PptxGenJS/issues"
  },
  + "typings": "dist/pptxgen.d.ts",
  "scripts": {
  "test": "echo \"Error: no test specified\" && exit 1",
  "build": "./node_modules/gulp/bin/gulp.js"
  