Watch files for changes and copy to other destination

Gruntfile.js

var pathToWatch = 'C:\\Users\\Arnon\\Downloads\\'; // Exploit!!
var copyTo = 'C:\\Users\\Arnon\\Desktop\\tst';


module.exports = function(grunt) {
  /**
   * Initialize grunt
   */
  grunt.initConfig({
    watch: {
      files: pathToWatch + '**',
      tasks: ['sync:main']
    },
    sync: {
      main: {
        files: [{
          cwd: pathToWatch,
          src: ['./**'],
          dest: copyTo
        }],
        pretend: false,
        verbose: true,
        failOnError: true,
        updateAndDelete: true
      }
    }
  });

  grunt.registerTask('default', [
    'sync:main',
    'watch'
  ]);

  grunt.loadNpmTasks('grunt-sync');
  grunt.loadNpmTasks('grunt-contrib-watch');

};

package.json

{
  "name": "watch-and-sync",
  "version": "1.0.0",
  "description": "Copy files whenever they change.",
  "author": "Arnon Eilat",
  "license": "ISC",
  "dependencies": {
    "grunt": "^0.4.5",
    "grunt-contrib-watch": "^0.6.1",
    "grunt-sync": "^0.5.2"
  }
}