Gruntfile.js

    module.exports = function( grunt ) {
    require( 'load-grunt-tasks' )( grunt, { scope: 'devDependencies' });
    require( 'time-grunt' )( grunt );
    grunt.initConfig({
        pkg: grunt.file.readJSON( 'package.json' ),
        banner: '/*\n' +
                '  Theme Name:       <%= pkg.name%>\n' +
                '  Theme URI:        <%= pkg.homepage %>\n' +
                '  Author:           Lacy Morrow\n' +
                '  Author URI:       http://lacymorrow.com\n' +
                '  Description:      <%= pkg.description %>\n' +
                '  Version:          <%= pkg.version%>\n' +
                '  License:          GNU General Public License v2.0\n' +
                '  License URI:      http://www.gnu.org/licenses/gpl-2.0.html\n' +
                '  Text Domain:      casper\n' +
                '  Domain Path:      /languages/\n' +
                '  Tags:             responsive-layout, black, white, one-column, fluid-layout, custom-header, custom-menu, editor-style\n' +
                '  GitHub Theme URI: <%= pkg.repository.url %>\n' +
                '  GitHub Branch:    master\n' +
                '  Casper is based on Underscores http://underscores.me/, (C) 2012-2014 Automattic, Inc.\n' +
                '*/',
        autoprefixer: {
            options: {
                browsers: ['> 1%', 'last 2 versions', 'Firefox ESR', 'Opera 12.1', 'ie 9']
            },
            casper: {
                expand: true,
                flatten: true,
                src: '<%= concat.casper.dest %>'
            }
        },
        concat: {
            options: {
                banner: '<%= banner %>\n',
                stripBanners: true
            },
            casper: {
                src: ['css/style.css', 'src/css/**/*.css'],
                dest: 'css/style.css'
            }
        },
        csscomb: {
            casper: {
                src: '<%= concat.casper.dest %>',
                dest: '<%= concat.casper.dest %>'
            }
        },
        csslint: {
            src: [
                '<%= concat.casper.dest %>'
            ]
        },
        cssmin: {
            casper: {
                options: {
                    noAdvanced: true,
                    compatibility: 'ie8',
                    keepSpecialComments: 0
                },
                casper: {
                    src: 'css/style.css',
                    dest: 'style.css'
                }
            }
        },
        jshint: {
            casper: ['Gruntfile.js', 'src/js/**/*.js', 'js/**/*.js'],
            options: {
                globals: {
                    jQuery: true,
                    console: true,
                    module: true,
                    document: true
                }
            }
        },
        less: {
            casper: {
                files: {
                    'css/style.css': ['src/less/style.less'],
                    'css/rtl.css': ['src/less/rtl.less'],
                    'css/admin.css': ['src/less/admin.less']
                }
            }
        },
        checktextdomain: {
           options:{
              text_domain: 'casper',
              correct_domain: true, //Will correct missing/variable domains
              keywords: [ //WordPress localisation functions
                    '__:1,2d',
                    '_e:1,2d',
                    '_x:1,2c,3d',
                    'esc_html__:1,2d',
                    'esc_html_e:1,2d',
                    'esc_html_x:1,2c,3d',
                    'esc_attr__:1,2d',
                    'esc_attr_e:1,2d',
                    'esc_attr_x:1,2c,3d',
                    '_ex:1,2c,3d',
                    '_n:1,2,4d',
                    '_nx:1,2,4c,5d',
                    '_n_noop:1,2,3d',
                    '_nx_noop:1,2,3c,4d'
              ]
           },
           files: {
               src:  [ '*.php', 'inc/*.php' ], //All php files
               expand: true
           }
        },
        pot: {
            options: {
                text_domain: 'casper',
                dest: 'languages/',
                keywords: [ //WordPress localisation functions
                  '__:1',
                  '_e:1',
                  '_x:1,2c',
                  'esc_html__:1',
                  'esc_html_e:1',
                  'esc_html_x:1,2c',
                  'esc_attr__:1',
                  'esc_attr_e:1',
                  'esc_attr_x:1,2c',
                  '_ex:1,2c',
                  '_n:1,2',
                  '_nx:1,2,4c',
                  '_n_noop:1,2',
                  '_nx_noop:1,2,3c'
                 ]
            },
            files:{
                src:  [ '*.php', 'inc/*.php' ], //Parse all php files
                expand: true
            }
        },
        uglify: {
            options: {
                banner: '/* jshint ignore: start */\n/*! <%= pkg.name %> <%= grunt.template.today("dd-mm-yyyy") %> */\n'
            },
            casper: {
                src: 'src/js/**/*.js',
                dest: 'js/main.js'
            }
        },
        watch: {
            options: {
                livereload: true
            },
            casper: {
                files: ['Gruntfile.js', 'src/**/*'],
                tasks: ['default'],
                options: {
                    nospawn: true
                }
            }
        }
    });
    grunt.registerTask( 'i18n', ['checktextdomain', 'pot']);
    grunt.registerTask( 'js', [ /* 'jshint', */ 'uglify']);
    grunt.registerTask( 'css', ['less', 'concat', 'csscomb', /* 'csslint', */ 'autoprefixer', 'cssmin']);
    grunt.registerTask( 'default', ['css', 'js']);

};