Failed to start the application

[zhaoyi0113]

I have run npm install successfully but get below errors when run npm run watch-jsaruco. Did I miss anything?

$ npm run watch-jsaruco

> web-ar@ watch-jsaruco /Users/joey/dev/ar/web-ar
> watchify jsaruco/js/app.js -t [babelify --presets [ es2015 ] ] -o jsaruco/build/app.js --debug --verbose

3577484 bytes written to jsaruco/build/app.js (2.62 seconds) at 5:27:25 PM
{ Error: ENOENT: no such file or directory, open 'jsaruco/build/app.js'
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: 'jsaruco/build/app.js' }

[abudaan]

Before you run the script you have to create a folder build inside the folder jsaruco. Sorry for this, I will update the README.