Gruntfile.js

module.exports = function(grunt) {
  grunt.initConfig({

    clean: ['dist'],

		copy: {
      copy_untouched_resources_to_dist: {
        files: [
          {
            expand: true,
            cwd: 'src',
            src: [
							'**/*',
							'!**/*.{png,jpg,gif}',
							'!js/*.js',
              '!*.html',
              'js/*.min.js',
              '!css/*.css',
              'css/*.min.css'
						],
            dest: 'dist'
          }
        ]
      }
    },

   htmlmin: {
      options: {
        removeComments: true,
        collapseWhitespace: true
      },
      all: {
        files: [{
					expand: true,                  // Enable dynamic expansion
					cwd: 'src/',                   // Src matches are relative to this path
					src: ['*.html'],   // Actual patterns to match
					dest: 'dist/'
        }]
      }
    },

    cssmin: {
      options: {
        removeComments: true,
        collapseWhitespace: true
      },
      all: {
        files: [{
					expand: true,                  // Enable dynamic expansion
					cwd: 'src/css/',                   // Src matches are relative to this path
					src: ['*.css', '!*.min.css'],   // Actual patterns to match
					dest: 'dist/css'
        }]
      }
    },

    imagemin: {                          // Task
			dynamic: {
				files: [{
					expand: true,                  // Enable dynamic expansion
					cwd: 'src/',                   // Src matches are relative to this path
					src: ['**/*.{png,jpg,gif}'],   // Actual patterns to match
					dest: 'dist/'                  // Destination path prefix
				}]
			}
    },
		uglify: {
			unminified_js: {
				files: [{
					expand: true,
					cwd: 'src/',
					src: [
						'js/*.js',
						'!js/*.min.js'
					],
					dest: 'dist/'
				}]
			}
		},
		watch: {
			scripts: {
				files: ['src/*'],
				tasks: ['default']
			}
		}
  });

  grunt.loadNpmTasks('grunt-contrib-clean');
  grunt.loadNpmTasks('grunt-contrib-copy');
  grunt.loadNpmTasks('grunt-contrib-htmlmin');
  grunt.loadNpmTasks('grunt-contrib-cssmin');
  grunt.loadNpmTasks('grunt-contrib-imagemin');
	grunt.loadNpmTasks('grunt-newer');
	grunt.loadNpmTasks('grunt-contrib-uglify');
	grunt.loadNpmTasks('grunt-contrib-watch');

  grunt.registerTask('production', ['clean', 'copy', 'htmlmin', 'imagemin', 'uglify', 'htmlmin', 'cssmin']);
  grunt.registerTask('default', ['newer:copy', 'newer:htmlmin', 'newer:imagemin', 'newer:uglify', 'newer:htmlmin', 'newer:cssmin']);

};