Gruntfile.js: Basic watch configuration, observing html, sass and javascript files

Gruntfile.js

/*globals module, grunt*/

'use strict';

module.exports = function (grunt) {

  // Project configuration.
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        watch: {
            options: {
                livereload: true
            },
            html: {
                files: ['*.html']
            },
            sass: {
                files: ['sass/main.scss'],
                tasks: ['sass']
            },
            scripts: {
                files: ['js/main.js']
            }
        },
        sass: {
            dist: {
                files: [{
                    expand: true,
                    cwd: 'sass', // src is relative to this path
                    src: ['*.scss'],
                    dest: 'css', // destination path
                    ext: '.css'
                }]
            }
        }
    });

    // Load the plugin
    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-contrib-sass');

    // Default task(s)
    grunt.registerTask('default', ['watch']);

};