Contains:
- sass to css compailer,
- es6 to es5 compailer,
- js concat and minify script,
- copy html files to public directory,
- minify images script
- clone project
- npm install
3a. run in console "gulp build" to build production version and make public directory.
3b. run in console "gulp watch' to build production version and watch changes on the fly in browser.