Gruntfile.js

module.exports = function(grunt) {

  // Project configuration.
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    htmlmin: {
      build: {
        files: {
          'build/index.html': 'index.html'
        }
      }
    },
    uglify: {
      build: {
        src: 'script.js',
        dest: 'build/script.min.js'
      }
    },
    cssmin: {
      build: {
        files: {
          'build/styles.min.css': 'styles.css'
        }
      }
    }
  });

  // Load the plugins we need
  grunt.loadNpmTasks('grunt-contrib-htmlmin');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-cssmin');

  // Register a default task.
  grunt.registerTask('default', ['htmlmin', 'uglify', 'cssmin']);
};