build folder missing.

[sjkurani]

I cloned the repository to my local system and tried to execute the project then in console i am able to find that the build directory under demo/js is missing.

Please find attached screen shot.

I can able to get the files from
https://incredibleweb.github.io/pwa-tutorial/js/build/vendor.min.js
and
https://incredibleweb.github.io/pwa-tutorial/js/build/script.min.js

but these files were missing while getting clone of the repository.

[kevinfarrugia]

@sjkurani you are required to run grunt, i.e. open the command line in the root folder and execute:

grunt dev