Sample Grunt File

Gruntfile.js

module.exports = function(grunt) {

 		SOURCE_DIR = '',
		BUILD_DIR = '../../wwwroot-wp_demo_theming/wp-content/themes/demo-theme',
 
	// Configuration Info
	
		grunt.initConfig({
		
		sass: {
				dev: {
					options: {
						     style: 'expanded',
						     sourcemap: 'none',
					},
				 files: {
						'style_readable.css' : 'scss/custom.scss'
                 }
				},
				 dist: {
						options: {
								style: 'compressed',
								sourcemap: 'none',
							},
						files: {
								'custom.css' : 'scss/custom.scss'
					}
				}
		},
			
		jshint: {
			files: ['Gruntfile.js', 'src/**/*.js', 'test/**/*.js'],
			options: {
				globals: {
					jQuery: true
				}
			}
		},
		
		phplint: {
			options: {
				phpArgs: {
					"-lf": null
				}
			},
			all : {
				src: ['*.php', '**/*.php']
			}
		},
                
        copy: {
			  css: {
					files: [{
						expand: true,
						cwd:SOURCE_DIR,
						src: 'custom.css',
						dest: BUILD_DIR
					}],
			  },
			  php: {
					files: [{
						expand: true,
						cwd:SOURCE_DIR,
						src: '**/*.php',
						dest: BUILD_DIR
					}],
			  },
			 screenshot: {
					files: [{
						expand: true,
						cwd:SOURCE_DIR,
						src: '*.png',
						dest: BUILD_DIR
					}],
			  }, 
		},
						
		watch: {
			scripts: {
				files: '**/*.js',
				tasks: ['jshint'],
			},
			php: {
				files: '**/*.php',
				tasks: ['phplint', 'copy:php'],
			},
			css: {
				files: '**/*.scss',
				tasks: ['sass', 'copy:css'],
			},
			lr: {
				options: { 
					livereload: true 
				},
				files: ['**/*.js', '**/*.php', '**/*.css'],
			},
		},
  
		
	});
 
	// Load Plugins
 
	grunt.loadNpmTasks('grunt-contrib-jshint');
	grunt.loadNpmTasks('grunt-contrib-watch');
	grunt.loadNpmTasks('grunt-phplint');
	grunt.loadNpmTasks('grunt-sass');
	grunt.loadNpmTasks('grunt-contrib-copy');
 
	// Define Tasks
 
	grunt.registerTask('default', ['watch']);
};

package.json

{
  "name": "demo-wordcamp_final",
  "version": "1.0.0",
  "description": "WordCamp Demo Final WordPress Theme",
  "main": "Gruntfile.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "grunt": "^0.4.5",
    "grunt-contrib-copy": "^0.8.0",
    "grunt-contrib-jshint": "^0.11.2",
    "grunt-contrib-watch": "^0.6.1",
    "grunt-phplint": "0.0.5",
    "grunt-sass": "^1.0.0"
  }
}