Use grunt-contrib-watch

Author: sanemat

Gruntfile.js

@@ -36,6 +36,7 @@ module.exports = function(grunt) {
 
   grunt.loadNpmTasks('grunt-contrib-nodeunit');
   grunt.loadNpmTasks('grunt-contrib-jshint');
+  grunt.loadNpmTasks('grunt-contrib-watch');
   // Default task.
   grunt.registerTask('default', 'nodeunit');
 

package.json

@@ -31,7 +31,8 @@
   "devDependencies": {
     "grunt": "^0.4.5",
     "grunt-contrib-jshint": "^0.11.2",
-    "grunt-contrib-nodeunit": "^0.4.1"
+    "grunt-contrib-nodeunit": "^0.4.1",
+    "grunt-contrib-watch": "^0.6.1"
   },
   "keywords": []
 }