Update project config files to work with Grunt 0.4.

Gruntfile.js

@@ -0,0 +1,45 @@
+'use strict';
+
+module.exports = function(grunt) {
+
+  // Load grunt tasks automatically
+  require('load-grunt-tasks')(grunt);
+
+  // Project configuration.
+  grunt.initConfig({
+    nodeunit: {
+      all: ['test/**/_test.js']
+    },
+    watch: {
+      files: '<config:lint.files>',
+      tasks: 'default'
+    },
+    jshint: {
+      options: {
+        curly: true,
+        eqeqeq: true,
+        immed: true,
+        latedef: true,
+        newcap: true,
+        noarg: true,
+        sub: true,
+        undef: true,
+        boss: true,
+        eqnull: true,
+        node: true,
+      },
+      all: [
+        'Gruntfile.js',
+        'tasks/{,*/}*.js',
+        'test/{,*/}*.js',
+      ]
+    }
+  });
+
+  // Default task.
+  grunt.registerTask('default', [
+    'jshint',
+    'nodeunit:all'
+  ]);
+
+};