|- gulp  // use for compiler source
|   |- html // use pug compiler to html
|        |- custom_module // all website module from here
|        |- page // all page from here (example: index.html from here and require head and footer from custom_module)
|   |- js // js files will compiler a single js file
|   |- sass // use sass compiler to css
|- dist // all compiled css & js & images