Gruntfile.js

//Gruntfile
module.exports = function (grunt) {

//Initializing the configuration object
    grunt.initConfig({

        // Paths variables
        paths: {
            // Development where put SASS files, etc
            assets: {
                css: './public/assets/stylesheets/',
                js: './public/assets/javascripts/',
                vendor: './public/assets/vendor/'
            },
            // Production where Grunt output the files
            css: './public/css/',
            js: './public/js/'

        },

        // Task configuration
        concat: {
            options: {
                separator: ';',
            },
            js_header: {
                src: [
                    '<%= paths.assets.vendor %>modernizr/modernizr.js',
                    '<%= paths.assets.js %>custom.js',
                ],
                dest: '<%= paths.js %>expanded/scripts_header.js',
            },
            js_footer: {
                src: [
                    '<%= paths.assets.vendor %>jquery/dist/jquery.js',
                    '<%= paths.assets.vendor %>jquery.cookie/jquery.cookie.js',
                    '<%= paths.assets.vendor %>jquery.placeholder/jquery.placeholder.js',
                    '<%= paths.assets.vendor %>fastclick/lib/fastclick.js',
                    '<%= paths.assets.vendor %>foundation/js/foundation.js'
                ],
                dest: '<%= paths.js %>expanded/scripts_footer.js',
            }
        },
        sass: {
            css: {
                options: {
                    style: 'compressed',
                    compass: true
                },
                files: [
                    {
                        expand: true,
                        cwd: '<%= paths.assets.css %>',
                        src: '**/*.scss',
                        dest: '<%= paths.css %>',
                        ext: '.css',
                    }
                ],
            },
        },
        uglify: {
            options: {
                // Grunt can replace variables names, but may not be a good idea for you, 
                // I leave this option as false
                mangle: false
            },
            js: {
                // Grunt will search for "**/*.js" when the "minify" task
                // runs and build the appropriate src-dest file mappings then, so you
                // don't need to update the Gruntfile when files are added or removed.
                files: [
                    {
                        expand: true,
                        cwd: '<%= paths.js %>',
                        src: '**/*.js',
                        dest: '<%= paths.js %>min',
                        ext: '.min.js',
                    }
                ],
            }
        },
        phpunit: {
            classes: {
                dir: 'app/tests/'   //location of the tests
            },
            options: {
                bin: 'vendor/bin/phpunit',
                colors: true
            }
        }
    });

// Plugin loading
    grunt.loadNpmTasks('grunt-contrib-compass');
    grunt.loadNpmTasks('grunt-contrib-sass');
    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-phpunit');

// Task definition
    grunt.registerTask('default', ['sass', 'concat', 'uglify', 'phpunit']);
};