Gruntfile.js

module.exports = function(grunt) {

  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    cssmin: {
       dist: {
          files: {
             'dist/css/<%= pkg.name %>.min.css': ['src/assets/css/*.css']
          }
      }
    },
    imagemin: {
       dist: {
          options: {
            optimizationLevel: 5
          },
          files: [{
             expand: true,
             cwd: 'src/assets/images',
             src: ['**/*.{png,jpg,gif}'],
             dest: 'dist/images/'
          }]
       }
    },
    concat: {
      dist: {
        src: ['src/**/*.js'],
        dest: 'dist/js/<%= pkg.name %>.js'
      }
    },
    uglify: {
      options: {
        banner: '/*! <%= pkg.name %> <%= grunt.template.today("dd-mm-yyyy") %> */\n'
      },
      build: {
        src: 'src/assets/js/<%= pkg.name %>.js',
        dest: 'dist/js/<%= pkg.name %>.min.js'
      }
    },
    qunit: {
      files: ['test/**/*.html']
    },
    watch: {
      css: {
        files: ['src/assets/css/*.css'],
        tasks: ['cssmin:dist']
      },
      js: {
        files: ['src/assets/js/*.js'],
        tasks: ['uglify:build']
      }
    }
  });

  grunt.loadNpmTasks('grunt-contrib-cssmin');
  grunt.loadNpmTasks('grunt-contrib-imagemin');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-qunit');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-contrib-concat');

  grunt.registerTask('test', ['qunit']);

  grunt.registerTask('default', ['qunit', 'concat', 'uglify', 'cssmin']);

};