very ugly, i know

Gruntfile.js

'use strict';

module.exports = function(grunt) {

	// load all grunt tasks
	require('matchdep').filterDev('grunt-*').forEach(grunt.loadNpmTasks);

	// configurable paths
	var projectConfig = {
		dev: 		'dev',
		dist: 		'dist/v<%= pkg.version %>',
		test: 		'test',

		js: 		'assets/js',
		jsLibs: 	'assets/js/libs',
		jsPlugins: 	'assets/js/plugins',
		jsCustom: 	'assets/js/app',

		css: 		'assets/css',
		less: 		'assets/less',
		fonts: 		'assets/fonts',

		img:		'assets/images'
	};

	grunt.initConfig({
		pkg: grunt.file.readJSON('package.json'),
		cfg: projectConfig,

		clean: {
			dist: {
				files: [
					{
						src: [
							'<%= cfg.dist %>'
						]
					}
				]
			}
		},
		useminPrepare: {
            options: {
                dest: '<%= cfg.dist %>'
            },
            html: '<%= cfg.dev %>/header.php'
        },
        usemin: {
            options: {
                dirs: ['<%= cfg.dist %>']
            }
        	,html: ['<%= cfg.dist %>/header.php']
            ,css: ['<%= cfg.dist %>/<%= cfg.css %>/{,*/}*.css']
        },
        concat: {
			options: {
				//separator: ';'
			}
		},
        cssmin: {
            dist: {
                files: {
                	'<%= cfg.dist %>/<%= cfg.css %>/print-dompdf.css': '<%= cfg.dev %>/<%= cfg.css %>/print-dompdf.css'
                    //'<%= cfg.dist %>/<%= cfg.css %>/main.css': '<%= cfg.dev %>/<%= cfg.css %>/{,*/}*.css'
                }
            }
        },
        copy: { // print-dompdf.css
			dist: {
				files: [
					{
						expand: true,
						cwd: '<%= cfg.dev %>/',
						src: [
							'adm/**',
							'!pub/',
							'assets/fonts/*',
							'assets/images/**',
							'inc/*',
							'*'
						],
						dest: '<%= cfg.dist %>'
					}
				]
			}
		}
	});

	grunt.registerTask('default', ['clean:dist', 'useminPrepare', 'cssmin', 'concat', 'uglify', 'copy:dist', 'usemin']);
};