Gruntfile.js

module.exports = function(grunt) {
	var includeAll;
  includeAll = require('include-all');

	function loadTasks(relPath) {
		return includeAll({
			dirname: require('path').resolve(__dirname, relPath),
			filter: /(.+)\.js$/
		}) || {};
	}

	function invokeConfigFn(tasks) {
		for (var taskName in tasks) {
			if (tasks.hasOwnProperty(taskName)) {
				tasks[taskName](grunt);
			}
		}
	}

	// Load task functions
	var taskConfigurations = loadTasks('tasks/config'),
		registerDefinitions = loadTasks('tasks/register');

	// (ensure that a default task exists)
	if (!registerDefinitions.default) {
		registerDefinitions.default = function (grunt) { grunt.registerTask('default', []); };
	}

	// Run task functions to configure Grunt.
	invokeConfigFn(taskConfigurations);
	invokeConfigFn(registerDefinitions);

};