Add grunt

grunt.js

@@ -0,0 +1,56 @@
+/*global module */
+module.exports = function( grunt ) {
+    'use strict';
+
+    grunt.initConfig({
+        meta: {
+          version: '2.5.3',
+          banner: '/*!\n' +
+            ' * Modernizr v<%= meta.version %>\n' +
+            ' * www.modernizr.com\n *\n' +
+            ' * Copyright (c) Faruk Ates, Paul Irish, Alex Sexton\n' +
+            ' * Available under the BSD and MIT licenses: www.modernizr.com/license/\n */'
+        },
+        lint: {
+            files: [
+                'grunt.js',
+                'modernizr.js',
+                'feature-detects/*.js'
+            ]
+        },
+        min: {
+            dist: {
+                src: [
+                    '<banner:meta.banner>',
+                    'modernizr.js'
+                ],
+                dest: 'modernizr.min.js'
+            }
+        },
+        watch: {
+            files: '<config:lint.files>',
+            tasks: 'lint'
+        },
+        jshint: {
+            options: {
+                curly: true,
+                eqeqeq: true,
+                immed: true,
+                latedef: true,
+                newcap: true,
+                noarg: true,
+                sub: true,
+                undef: true,
+                boss: true,
+                eqnull: true,
+                browser: true
+            },
+            globals: {
+                Modernizr: true
+            }
+        }
+    });
+
+    grunt.registerTask('default', 'min');
+
+};