U: title
A: temporary files
A: layouts
U: config of buiding task
U: folder structure
A: stylesheets' backup
D: useless files
U: config
A: backup
U: directory's structure
U: variables for Sass
D: useless files
U: config of compilation
U: scss files
U: config of Grunt
U: backup of sass toolkit
U: sourse of scss
U: layout
A: files compiled
U: compiled files